RRB RPF RPSF SI and CONS Model Papers 7 with solutions

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Question : 59 of 120

Marks: +1, -0

If

2 /3

of A = 75% of B = 0.6 of C, then A : B : C is equal to

9 : 8 : 10
8 : 9 : 10
3 : 4 : 5
4 : 3 : 5

Solution:

(1)

{ {A}× 2}/{3}= { {B}× 75}/{100}= { {C}× 6}/{10}

⇒

{2 A}/{3}=\ {3 B}/{4}= {3 C}/{5}

Dividing by 6 (l cm of 2, 3 and 3)
⇒

{ {A}}/{9}= { {B}}/{8}= { {C}}/{10}

∴ A : B : C = 9 : 8 : 10

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