SOLUTION: the area of sqare decreases 7 sq units by decreasing length 5 cms and by increasing breadth 3cms.if length increases 3 cms and breadth increases 2 cms then area will increase 6

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Question 769226: the area of sqare decreases 7 sq units by decreasing length 5 cms and by increasing breadth 3cms.if length increases 3 cms and breadth increases 2 cms then area
will increase 62 sq units.what is the lengh of the squareż
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
Side length original square, s.
Original area, s%5E2.

If sides become s-5 and s+3, then s%5E2-%28s-5%29%28s%2B3%29=7
If sides become s+3 and s+2, then %28s%2B3%29%28s%2B2%29-s%5E2=62
Find s.

The "7" equation:
s%5E2-+%28+s%5E2-5s%2B3s-15%29=7
s%5E2-%28s%5E2-2s-15%29=7
s%5E2-s%5E2%2B2s%2B15=7
2s=7-15=-8
s=-4 which is nonsense.

The "62" equation:
s%5E2%2B5s%2B6-s%5E2=62
5s%2B6=62
5s=62-6
5s=56
highlight%28s=56%2F5=11%261%2F5%29

Something is wrong in your description. The first part fails but the second part succeeds.