The peremeter of a rectangle pool is 140 yd. If the L is 10 yd more than the W , find the L + W.

Question

anonymous · Answer

L+W=70

anonymous · Answer

easy question see  here given that L = W+10yd
perimeter of rectangle = 2(L+B) 
hence here  2(L+B) = 2(W+10yd. + W)
2(2W+10yd)=140yd
divide both sides by2 
2W+10yd=140yd/2
2W+10yd = 70yd
2W = 70yd - 10yd
2W = 60 yd.
hence W = 60/2 yd.
W = 30 yards 
now L = 10 + W
       L = 40yds. ( yards) 
hence W + L = 70yards
it can be solved much easily but i solved it like this so that u can understand how to values of L and B also got it or not