Easy Math Trivia

Explanation
A ten percent off coupon means that you will receive a discount of ten percent on the original price of the item. In this case, the original price of the item is $20. To calculate the discount, you can multiply $20 by 10 percent (0.10), which gives you $2. Subtracting this discount from the original price, the item will cost $20 - $2 = $18. Therefore, the correct answer is 18 Dollars.

Explanation
The balance can be calculated by subtracting the down payment and trade-in value from the total cost of the car. In this case, the down payment is $2000 and the trade-in value is $2500, so the balance would be $14,000 - $2000 - $2500 = $9,500.

Explanation
By taking two steps at a time, the number of steps required to climb a staircase can be halved. Since there are 42 steps in total, by taking two steps at a time, it will take 21 steps to climb the staircase.

Explanation
If an $80.00 shirt is on sale for 20% off, the discount would be $16.00 (20% of $80.00). Therefore, the shirt would cost $80.00 - $16.00 = $64.00 after the discount.

Explanation
The cake will be done at 7:19 because it takes 37 minutes to bake and it was put in the oven at 6:42. Adding 37 minutes to 6:42 gives us 7:19.

Explanation
If you initially had 23 pens and threw away 5, you would have 18 pens. However, if you then found 2 more pens, you would have a total of 20 pens.

Explanation
Billy sells lemonade for 15 cents and has 50 customers. To find out how much money he makes, we can multiply the price of each lemonade (15 cents) by the number of customers (50). This calculation gives us 750 cents. However, since we want the answer in dollars, we need to convert cents to dollars by dividing 750 by 100. This gives us 7.5 dollars, which is the amount of money Billy makes.

Explanation
If 30% of Nat's 10 shirts are dirty, then 70% of them must be clean. To find the number of clean shirts, we can multiply 10 by 70% (0.70). 10 * 0.70 equals 7, so Nat has 7 clean shirts.

Explanation
The price of the $70 shoes is reduced by 20% due to the seasonal sale. To find the new price, we need to calculate 20% of $70, which is $14. Subtracting $14 from $70 gives us $56, which is the new price of the shoes after the discount.

Explanation
If you have a five dollar bill and you spend $4.15 of it, you subtract $4.15 from $5. This gives you $0.85 left.

Explanation
Jane listened to 30 songs, each lasting for 3 minutes. To calculate the total time, we multiply the number of songs by the duration of each song: 30 songs * 3 minutes/song = 90 minutes. Therefore, Jane listened to songs for 1 hour and 30 minutes.

Explanation
Ann is 9 years old and her mom is 27 years older than her. This means that her mom's age is 9 + 27 = 36 years old.

Explanation
To find the cost of 1 pound of candy, we need to convert the weight from ounces to pounds. Since there are 16 ounces in 1 pound, we can multiply the cost per ounce ($0.10) by the number of ounces in 1 pound (16). This gives us a total cost of $1.60 for 1 pound of candy.

Explanation
Martha has a total of 27 pieces of fruit because the question states that she has 15 kiwis and 12 mangoes. By adding these two quantities together, we get 27.

Explanation
If notebooks cost $1.25 each and you need five, the total cost can be calculated by multiplying the cost of one notebook by the number of notebooks needed. Therefore, the total cost would be 1.25 * 5 = $6.25.