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If 7 bananas cost $2.55, what will be the cost for 14 bananas? Round your answer to the nearest penny.

A $5.10

Translate the words into an equation. Let x represent the unknown number.
7 bananas=$2.55
14 bananas=x
Let’s drop the units. Cross-multiply and then divide to find the solution.
(14 × 2.55) ÷ 7 = 5.1
Round to the nearest penny.
Thus, 14 bananas cost $5.10.

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