The perimeter 3

The perimeter of a rectangle is 35 cm. The ratio of the length to its width is 3:2. Calculate the dimensions of the rectangle

Correct result:

l =  10.5 cm
w =  7 cm

Solution:

p=35 cm n=3+2+3+2=10  d=p/n=35/10=72=3.5 cm  l=3⋅ d=3⋅ 3.5=212=212 cm=10.5 cm
w=2⋅ d=2⋅ 3.5=7 cm

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