Question

A camp leader buys a book for each of her campers. She spends $7.50 on each book.

Which expression can be used to find the amount of money the camp leader spends on b books?
A 7.50 x b
B. 7.50 + b
C. 7.50 - b
D. 7.50 = 6
.

Answer 1

The expression to calculate the amount spent on b books at $7.50 each is 7.50 × b, following the principle of multiplying the number of items by the cost per item.

Step-by-step explanation:

The correct expression to find the amount of money the camp leader spends on b books if each book cost $7.50 is 7.50 × b. You calculate total expenditure on multiple items by multiplying the cost per item by the number of items. This is just like the examples provided where to find the total cost spent on fruits, you multiply the number of fruits by their individual cost, as shown: '10 apples × 50 cents each = $5.00 spent on apples' and '12 bananas × 20 cents each = $2.40 spent on bananas'.