Felhadwyn Dec 14, 2020

the total cost of 12 books and 15 pens is $305.60.the average cost of 15 pens is $4.60.what is the average of 12 books..?

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AN ELECTRONIC MACHINE THAT CAN STORE FIND AND ARRANGE INFORMATION CALCULATE AMOUNTS AND CONTROL OTHER MACHINES.

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Murray

Dec 14, 2020

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the total cost of 12 books and 15 pens is $305.60.the average cost of 15 pens is $4.60.what is the average of 12 books..?​