Question

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If 3A = 4B = 5C, find A:B:C.

[ Hint : Divide by 60 the LCM of 3,4,5 ]

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Answer 1

Answer:

Let 3A = 4B = 5C = x

3A = x

A = x/3

4B = x

B = x/4

5C = x

C = x/5

A : B : C = x/3 : x/4 : x/5

LCM is 60

→ = 20x/60 : 15x/60 : 12x/60

→ = 20 : 15 : 12

A : B : C = 20 : 15 : 12

Answer 2

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