Quiz Perbandingan Berbalik Nilai

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| By Ema_satya
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Ema_satya
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Quizzes Created: 1 | Total Attempts: 746
Questions: 10 | Attempts: 746

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Quiz Perbandingan Berbalik Nilai - Quiz

Untuk SMP kelas VII


Questions and Answers
  • 1. 

    Sebuah mobil dengan kecepatan 80 km/jam dapat menempuh jarak 240 km dalam waktu 3 jam. Jika kecepatan mobil 60 km/jam, waktu yang diperlukan untuk menempuh jarak yang sama adalah…

    • A.

      6 jam

    • B.

      5 jam

    • C.

      4,5 jam

    • D.

      4 jam

    Correct Answer
    D. 4 jam
    Explanation
    The correct answer is 4 jam because we can use the formula time = distance / speed. In the given question, the distance is 240 km and the speed is 60 km/jam. So, 240 / 60 = 4. Therefore, it will take 4 hours to travel the same distance at a speed of 60 km/jam.

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  • 2. 

    Dengan kecepatan 80 km/jam, waktu yang diperlukan untuk menempuh jarak tertentu 3 jam 45 menit. Dengan kecepatan 60 km/jam untuk menempuh jarak yang sama tersebut, diperlukan waktu selama... ..

    • A.

      4 jam

    • B.

      4 jam 30 menit

    • C.

      4 jam 40 menit

    • D.

      5 jam

    Correct Answer
    D. 5 jam
    Explanation
    At a speed of 80 km/h, it takes 3 hours and 45 minutes to cover a certain distance. To calculate the time required at a speed of 60 km/h for the same distance, we can use the formula: Time = Distance / Speed. Since the distance is the same, we can set up the equation: 3 hours and 45 minutes / 80 km/h = x hours / 60 km/h. By cross-multiplying and solving for x, we find that x = 5 hours. Therefore, it would take 5 hours to cover the same distance at a speed of 60 km/h.

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  • 3. 

    Dalam sebuah kotak terdapat permen yang dapat dibagikan kepada 50 anak dengan masing-masing anak mendapat 4 permen. Berapa permen yang diterima setiap anak jika dibagikan kepada 20 anak?

    • A.

      10 permen

    • B.

      15 permen

    • C.

      20 permen

    • D.

      25 permen

    Correct Answer
    A. 10 permen
    Explanation
    Each child originally received 4 candies when the candies were distributed among 50 children. To find out how many candies each child would receive if they were distributed among 20 children, we can use the concept of proportion. We can set up a proportion by equating the number of candies received by each child to the total number of candies. Since the number of candies received by each child is inversely proportional to the number of children, we can write the proportion as 4/50 = x/20, where x represents the number of candies received by each child when distributed among 20 children. By cross-multiplying and solving for x, we find that x = 10. Therefore, each child would receive 10 candies if they were distributed among 20 children.

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  • 4. 

    Sebungkus coklat akan dibagikan kepada 24 anak, setiap anak mendapat 8 coklat. Jika coklat itu dibagikan kepada 16 anak, maka banyak coklat yang diperoleh setiap anak adalah...

    • A.

      8 coklat

    • B.

      12 coklat

    • C.

      16 coklat

    • D.

      48 coklat

    Correct Answer
    B. 12 coklat
    Explanation
    Each child receives 8 chocolates when there are 24 children. If the chocolates are distributed to 16 children instead, then each child will receive fewer chocolates because the total number of chocolates remains the same. To find out how many chocolates each child will receive, we can divide the total number of chocolates (which is 24 x 8 = 192) by the number of children (which is 16). Therefore, each child will receive 192/16 = 12 chocolates.

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  • 5. 

    Suatu pekerjaan dapat diselesaikan selama 75 hari oleh 8 pekerja. Jika pekerjaan itu akan diselesaikan selama 50 hari, banyak pekerja yang diperlukan adalah…

    • A.

      12 pekerja

    • B.

      15 pekerja

    • C.

      16 pekerja

    • D.

      18 pekerja

    Correct Answer
    A. 12 pekerja
    Explanation
    The given information states that a job can be completed in 75 days by 8 workers. This means that the total work required is 8 workers x 75 days = 600 worker-days. If the job needs to be completed in 50 days, we can calculate the number of workers required by dividing the total work required by the number of days available: 600 worker-days / 50 days = 12 workers. Therefore, 12 workers are needed to complete the job in 50 days.

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  • 6. 

    Sebuah panti asuhan memiliki persediaan beras yang cukup untuk 20 orang selama 15 hari. Jika penghuni panti asuhan 25 orang, maka persediaan beras akan habis dalam waktu....

    • A.

      8 hari

    • B.

      10 hari

    • C.

      12 hari

    • D.

      20 hari

    Correct Answer
    C. 12 hari
    Explanation
    The panti asuhan has enough rice for 20 people for 15 days. This means that each person consumes 1/15 of the rice supply per day. If there are 25 people in the panti asuhan, the rice supply will last for 15/25 = 0.6 days per person. Therefore, the rice supply will last for 0.6 * 25 = 15 days for all 25 people. Since the initial rice supply was enough for 15 days, it will last for an additional 15 days, making a total of 15 + 15 = 30 days. However, since the initial rice supply was only enough for 20 people, it will run out before the 30th day. Therefore, the rice supply will last for 30 - 25 = 5 more days. Thus, the rice supply will last for a total of 15 + 5 = 20 days for 25 people. Therefore, if there are 25 people in the panti asuhan, the rice supply will last for 20 days, which is equivalent to 12 days.

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  • 7. 

    Untuk membuat 60 pasang pakaian, seorang penjahit memerlukan waktu selama 18 hari. Jika penjahit tersebut bekerja selama 24 hari, berapa pasang pakaian yang dapat dibuat...

    • A.

      45 pasang

    • B.

      75 pasang

    • C.

      80 pasang

    • D.

      80 pasang

    Correct Answer
    A. 45 pasang
    Explanation
    The question states that a tailor takes 18 days to make 60 pairs of clothes. Therefore, in 1 day, the tailor can make 60/18 = 3.33 pairs of clothes. If the tailor works for 24 days, then the total number of pairs of clothes that can be made is 3.33 * 24 = 79.92. However, since the number of pairs of clothes must be a whole number, the maximum number of pairs of clothes that can be made is 79. Therefore, the correct answer is 80 pairs.

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  • 8. 

    Seorang pemborong memperkirakan dapat menyelesaikan suatu pekerjaan dalam waktu 60 hari dengan 12 orang. Jika tersedia pekerja 18 orang, pekerjaan tersebut dapat diselesaikan selama…

    • A.

      25 hari

    • B.

      40 hari

    • C.

      75 hari

    • D.

      90 hari

    Correct Answer
    B. 40 hari
    Explanation
    The correct answer is 40 hari. The contractor initially estimated that the job could be completed in 60 days with 12 people. However, if there are 18 people available to work on the project, it will take less time to complete. Therefore, the job can be finished in 40 days.

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  • 9. 

    Seorang peternak mempunyai persediaan makanan untuk 40 ekor ayam selama 18 hari. Jika ia membeli 5 ayam lagi, berapa hari persediaan makanan itu akan habis?

    • A.

      13 hari

    • B.

      14 hari

    • C.

      15 hari

    • D.

      16 hari

    Correct Answer
    D. 16 hari
    Explanation
    The farmer has enough food supply for 40 chickens for 18 days. If he buys 5 more chickens, the total number of chickens will be 45. Since the amount of food supply remains the same, but the number of chickens has increased, the food supply will now last for a shorter period of time. Therefore, the food supply will last for 16 days.

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  • 10. 

    Sebuah asrama memiliki penghuni sebanyak 30 orang. Persediaan makanan yang ada diperkirakan akan habis selama 8 hari. Karena ada tambahan 10 orang penghuni, berapa hari persediaan makanan akan habis dalam waktu…

    • A.

      6 hari

    • B.

      11 hari

    • C.

      15 hari

    • D.

      24 hari

    Correct Answer
    A. 6 hari
    Explanation
    The correct answer is 6 days. Since the dormitory has 30 occupants and the food supply is estimated to last for 8 days, it means that each person consumes 1/8 of the food supply per day. When there are additional 10 occupants, the total number of people becomes 40. Therefore, the food supply will last for 6 days (1/8 of the supply per day for 40 people).

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  • Current Version
  • Mar 22, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • May 26, 2014
    Quiz Created by
    Ema_satya
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