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If the breadth of a rectangle is increased by 5 cm, its area increases by `25cm^2`.If increased by 5 cm, its area increases by `20cm^2`,Fins the area of the rectangle (In `cm^2` |
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Answer» Area=`l*b=Acm^2-(1)` `l(b+5)=(A+25)-(2)` `(l+5)b=(A+20)-(3)` subtracting equation 1 from equation 2 5l=25 l=5cm subtracting equation 1 from equation 3 `5b=20cm^2` b=4cm Area=`l*b=4*5=20cm^2` Option 1 is correct |
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