Equations - Middle School

Mrs. Smith went shopping to the farmers market. She bought 3 pounds of Tomatoes at $1.57 per pound and 3 pounds of Carrots at $1.15 per pound. Which of the following represents the total cost of Mrs. Smith’s purchases?

a. 3(1.57 x 1.15)
b. 3 + (1.57 x 1.15)
c. 3(1.57 + 1.15)
d. (3 + 1.57) x (3 + 1.15)

Answer: c

Explanation:
The answer will be 3(1.57 + 1.15).
The total money that Mr. Smith spent per pound is: $1.57 + $1.15 = $2.72 per pound
Since she bought 3 pounds of each then we multiply that by the price per pound to get the correct expression: 3 ($2.72) = $8.16

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