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07-03-2018
Mathematics

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The lenght of a rectangle is 3 times the width.The preimeter is 120 meters.Find the Length and Width

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07-03-2018

My solution: P.S I’m not sure if I’m correct.

2L+2W=120
2*3W+2W=120
6W+2W=120
8W=120
W=120/8
W=15 M. FOR THE WIDTH.
L=3*15=45 M. FOR THE LENGTH.
PROOF:
2*45+2*15=120
90+30=120
120=120

Hope this solution works! If not, I’m very sorry. :(

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