The length of a rectangle is 2 cm less than 7 times the width. The perimeter is 60 cm. Find the width and length.

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Mathematics

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13 April, 06:32

The length of a rectangle is 2 cm less than 7 times the width. The perimeter is 60 cm. Find the width and length.

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Itzel · Answer 1

Lets assume width=x. Then lenght its 7*x-2

We know that perimeter its 2*length+2*width=60

Now we substitute our x and 7x-2

2 * (7x-2) + 2x=60

14x-4+2x=60 / + 4

16x=64 / : 16

x=4 - its the width

7*x-2, where x=4

28-2=26 - length