A rectangle l is increased by 10 & b is decreased by 5.again l is decreased by 5 and b is increased by 4 area unaltered in both case find l?

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nishita

  • Jul 1st, 2006
 

the length is 30.. solve it by simultaneous eq..

first eq will b: (x+10)(y-5)=xy

sec eq wil b: (x-5)(y+4)=xy

solvin simultaneously..u get x=30

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