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A box of 15 markers costs $2.40. At the same unit price, how much will a box of 40 markers cost? A. $4.80 B. $6.40 C. $5.90 D. $5.15

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First, calculate the unit price.
2.40/15=$0.16
Second, calculate the price of 40 markers.
0.16*40=$6.40
User Nithesh Chandra
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