Question

A copper wire was 240m long.After 60m was cut off,it was twice the length of a steel wire. How long was the copper wire than steel wire in the beginning

Answer 1

Answer:

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initial length of the copper wire C1. C1=240m.

Cutting 60m. off gives 240m -60m = 180m. Let's call this C2.

Call the length of the steel wire S.

So C2= 180m=2S.

Divide both sides by 2 to get 90m=S.

Since C1=240m, Subtract S from C1: 240m.-90m.=150m.

I think the copper wire was 150 meters longer than the steel wire at first.