Rectangle

Perimeter of rectangle is 48 cm. Calculate its dimensions if they are in the ratio 5:3 (width:height)

Correct answer:

a =  15 cm
b =  9 cm

Step-by-step explanation:


2(a+b)=48
3a = 5b

2•(a+b)=48
3•a = 5•b

2a+2b = 48
3a-5b = 0

a = 15
b = 9

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