SOLUTION: A rectangular playground is 420 sq.m. If its length is increases by 7m and breadth is decreased by 5 meters, the area remains the same. Find the length and breadth of the playgroun
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Question 981935: A rectangular playground is 420 sq.m. If its length is increases by 7m and breadth is decreased by 5 meters, the area remains the same. Find the length and breadth of the playground?
Answer by mananth(16946) (Show Source): You can put this solution on YOUR website!
let length be x
area = l*b
breadth = 420/x
(x+7)(420-5x) = 420x
/-5
(x-28)(x+21)=0
x=28 OR -21
length = 28m & breadth = 21 m
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