Question

The perimeter of a rectangular swimming pool is 74m . It's length is 4 more than thrice of it's breadth. What are the length and breadth of pool?

A) 25 and 6

B)26 and 11

C)20 and 7

D)20 and 6

E) 22 and 26

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Answer 1

Answer:

Perimeter of a rectangle = 2(l + b) = 74 m

l = 4 + 3b

So, 2 ( 4 + 3b + b) = 74

4 + 4b = 37

4b = 33

b = 33/4

so, l = 4 + 3 (33/4)

l = 4 + 99/4 = 115/4