Question

2A = 4B = 5C, then A:B:C =??​

Answer 1

Answer:

A=1/2,B=1/4,C=1/5

DO THE L.C.M

It is 20

1/2×20:1/4×20:1/5×20

10:5:4 (Ans).

Answer 2

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2A = 4B =5C, then A:B:C =??

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➪Let, 2A = 4B =5C = X

➪So, 2A = x

$⇒a = \frac{x}{2}$

Similarly,

$⇒b = \frac{x}{4}$

And

$⇒c = \frac{x}{5}$

$⇒So \: A:B:C = \frac{x}{2} : \frac{x}{4} : \frac{x}{5}$

⇒LCM of 2,4,5 is 20.

⇒So A:B:C can be written as :—

$⇒\frac{10x}{20} : \frac{5x}{20} : \frac{4x}{20}$

⇒Thus A:B:C = 10:5:4