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13-11-2017
Mathematics

contestada

A stamp collector bought 160 stamps for $25.00. The purchase included 5¢ stamps, 15¢ stamps, and 25¢ stamps. The number of 15¢ stamps is three times the number of 5¢ stamps. How many of each type of stamp was purchased?

Respuesta :

22-11-2017

5- 30
15- 90
52- 40
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