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Q. The sides of a rectangle are in the ratio 4 : 5. If the perimeter of the rectangle is 90 cm, then its sides are

(A) 28, 35

(B) 20, 24

(C) 20, 25

(D) None of these

Perimeter=2(l+b)=90

2(4x+5x)=90

2(9x)=90

18x=90

x=90?18

Therefore,x=5

4x=4?5=20 cm

5x=5?5=25 cm