Latihan Mtk Pts Kelas 7

Explanation
The correct answer is Rp 50.000,00 because if the ratio of Indah's money to Andri's money is 5:6, and the total amount of money they have is Rp 110.000,00, we can set up the equation 5x + 6x = 110.000,00, where x represents the common ratio. Solving this equation, we get x = 10.000,00. Therefore, Indah's money is 5x = 5 * 10.000,00 = Rp 50.000,00.

Explanation
The profit obtained by the merchant can be calculated by finding the difference between the selling price and the buying price of the clothes. The merchant bought 3 kodi (a unit of measurement equal to 20 pieces) of clothes for Rp 600,000 per kodi, which means he spent a total of Rp 1,800,000. He then sold all the clothes for Rp 400,000 per lusin (a unit of measurement equal to 12 pieces). Since 3 kodi is equal to 60 pieces, the merchant sold the clothes for a total of Rp 2,000,000. Therefore, the profit obtained by the merchant is Rp 2,000,000 - Rp 1,800,000 = Rp 200,000.

Explanation
The correct answer is 95° because the sum of the angles in a triangle is always 180°. Since angle SQR is a straight angle, it measures 180°. Since angle QSR is a right angle and angle SQR is a straight angle, the remaining angle QRS must be 180° - 90° - 180° = -90°. However, angles cannot have negative measures, so we take the absolute value of -90°, which is 90°. Since angle SQR is a straight angle, the sum of its two parts (QRS and QSR) must be 180°. Therefore, angle SQR must measure 180° - 90° = 90°.

Explanation
The car requires 5 liters of gasoline to travel 60 km. Therefore, for every 1 km, the car consumes 5/60 = 1/12 liters of gasoline. If the car has consumed 40 liters of gasoline, it means it has traveled 40 * 12 = 480 km.

Explanation
The trader bought a TV for Rp 2,000,000 and sold it for Rp 2,400,000. To find the percentage profit, we need to calculate the difference between the selling price and the buying price, which is Rp 2,400,000 - Rp 2,000,000 = Rp 400,000. Then, we divide this profit by the buying price and multiply by 100 to get the percentage. (Rp 400,000 / Rp 2,000,000) x 100 = 20%. Therefore, the trader made a 20% profit.

Explanation
The sum of the angles in a triangle is always 180°. Therefore, to find the measure of angle number 3, we subtract the measures of angles 1 and 2 from 180°. 180° - 95° - 110° = 15°.

Explanation
If a job can be completed by 25 people in 32 days, it means that the total work required is equal to 25 x 32 = 800 units of work. If the same job is done by 20 people, the work rate per day will decrease. The new number of days required can be calculated by dividing the total work (800 units) by the new work rate (20 people). Therefore, the job will be completed in 800/20 = 40 days.

Explanation
The correct answer is Rp600.000,00. In order to calculate the selling price with a 20% profit, we need to add 20% of the cost price to the cost price itself. 20% of Rp500.000,00 is Rp100.000,00. Adding this to the cost price, we get Rp600.000,00. Therefore, the item should be sold for Rp600.000,00 in order to achieve a 20% profit.

Explanation
The correct answer is 72°.

Explanation
When a dirty room is cleaned by 5 people, it takes 18 minutes. If the room is only cleaned by 3 people, it would take longer because there are fewer people working. Therefore, the correct answer is 30 minutes, which is longer than the original time of 18 minutes.

Explanation
The net weight of each sugar bag can be calculated by subtracting the tare weight (1.5% of the gross weight) from the gross weight. In this case, the gross weight of 6 sugar bags is 180 kg. The tare weight is 1.5% of 180 kg, which is 2.7 kg. Subtracting 2.7 kg from 180 kg gives us 177.3 kg, which is the total net weight of the 6 sugar bags. To find the net weight of each bag, we divide 177.3 kg by 6, which gives us approximately 29.55 kg. Therefore, the correct answer is 29.55 kg.

Explanation
The question is asking for the value of the angle "penyiku SQR". The correct answer is 58°.

Explanation
The price of 1 gross of spoons is Rp 72,000. Since 1 gross is equal to 12 dozens, the price of 1 dozen spoons can be calculated by dividing the price of 1 gross by 12. Therefore, the price of 1 dozen spoons is Rp 6,000. To find the price of 5 dozens of spoons, we multiply the price of 1 dozen by 5. Hence, the price of 5 dozens of spoons is Rp 30,000.

Explanation
The trader sells his goods for x rupiah and makes a profit of Rp15,000, which is 20% of his capital. To find the value of x, we can set up the equation: 0.2x = Rp15,000. Solving for x, we divide both sides by 0.2, giving us x = Rp75,000. Therefore, the correct answer is Rp75,000.

Explanation
The correct answer is 72°. This suggests that the angle AOC is 72°.