1.

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`

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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