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Use a proportion if two cassettes cost $14.50 How much will 15 cost

User Stannius
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1 Answer

3 votes
cost/(number of cassettes) = $14.50/2 = x/15

Multiply by 15 to solve
15*($14.50/2) = x = $108.75

15 cassettes will cost $108.75.
User Orn Kristjansson
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