RRB Group D Model Paper 4 with solutions

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Question : 20 of 100

Marks: +1, -0

If 5A = 8B = 13C, find A : B : C.

104 : 65 : 40
65 : 40 : 104
100 : 160 : 65
65 : 104 : 40

Solution:

(1)

A/B=8/5

and

B/C=13/8

LCM of 5 and 13 = 65
∴

8/5×13/13=104/65

and

13/8×5/5=65/40

Hence,
A : B : C = 104 : 65 : 40

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