Asked by Lilly

three note pads and one pencil cost 70 cents. One note pad and three pencils cost 50 cents. How much do two pencils and two note pads cost?

Answers

Answered by Steve
3n+p = 70
n+3p = 50
add them together and you have
4n+4p = 120
so,
2n+2p = 60
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