Delhi Police Constable Exam Model Paper 6

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Question : 79 of 100

Marks: +1, -0

If a : b is 2 : 3 and b : c is 5 : 3, find a : c.

2 : 3
1 : 1
10 : 9
2 : 5

Solution:

Given:
a ∶ b = 2 ∶ 3
b ∶ c = 5 ∶ 3
Calculations:

a ∶ b = 2 ∶ 3 × 5

⇒

10 ∶ 15

b ∶ c = 5 ∶ 3 × 3

⇒

15 ∶ 9

Hence,

a ∶ b ∶ c = 10 ∶ 15 ∶ 9

$∴ a ∶ c is 10 ∶ 9$

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