Increases 63204

If side b of the rectangle increases by 1 cm and the other side decreases by 4 cm at the same time, the area of the rectangle decreases by 48 cm2. If side b increases by 2 cm and side ao decreases by 1 cm at the same time, the area of the rectangle increases by 22 cm2. Determine the sides a and b of the rectangle.

Correct answer:

a =  16 cm
b =  20 cm

Step-by-step explanation:

(a+1) (b4)=a b48 (a+2) (b1)=a b+22  4ab=44 a2b=24  Row241 Row1Row2 4ab=44 1.75b=35  b=1.7535=20 a=444+b=444+20=16=16 cm  a=16 b=20



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