Answers

2016-05-02T15:02:19+05:30
Let the length be x
let the breadth be y
area =xy
new length=x+7
new breadth=y+3
according to the question:
xy=(x+7)(y+3)
xy=xy+3x+7y+3
0=3x+7y+3
-3=3x+7y-eq 1
new length=x-7
new breadth=y+5
xy=(x-7)(y+5)
xy=xy-7y+5x-35
35=-7y+5x-eq 2
solve eq 1&2
u will get x&y



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