Railway Recruitment Board Mathematics — Question 1697
Question
If a : b = 3 : 4 and b : c = 8 : 9, then what is a : c?
- 2:3
- 3:4
- 1:2
- 4:9
Correct answer
A — 2:3
Explanation (English)
Make b common. a:b = 3:4 = 6:8; b:c = 8:9. So a:b:c = 6:8:9, giving a:c = 6:9 = 2:3.
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