SOLUTION: the perimeter of the rectangular is 70 meters. if the width is 40% of the length, find the dimensions?

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Question 879610: the perimeter of the rectangular is 70 meters. if the width is 40% of the length, find the dimensions?
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
Write everything you can understand or are facts about the problem.

w for width
L for length
2w+2L=70, w=(40/100)L, w=(4/10)L, w=(2/5)L.

Identify the system of equations which describe well the problem:
2w%2B2L=70 and w=%282%2F5%29L.
The coefficients and constant term of the perimeter equation are even numbers, so division by 2 will give a simpler equation:
w%2BL=35.

You have various choices about solving the system, which can now be listed as:
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w+L=35 AND w=(2/5)L
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Solve for L and w.