Noah and Katie are shopping for new guitar strings in a music store. Noah buys 2 packs of strings. Katie buys 2 packs of strings and a music book. The book costs $16. Thier total cost is $72.

Question

How much is one pack of strings?

Please write the equation for the problem, and then solve it. (step by step).

Answer 1

p price of packs of strings

b price of music book

2p + 2p + b = $72

4p + $16 = $72

4p = $56

p = $14

Answer 2

72-16=56/4=14.................