The ratio of three numbers is 3 : 2 : 1 and their sum is 54. What is the largest number?
- 27
- 29
- 31
- None of these
Explanation
Total ratio = 3 + 2 + 1 = 6
One part = 54 ÷ 6 = 9
Largest number = 3 × 9 = 27
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- 7 : 9
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