The sum of three numbers is 180. If the ratio of the first to second is 3 : 5, and the ratio of the second to third is 4 : 7, then the second number is:
Show answer & explanation
Correct answer: B
Explanation
Given:
Sum of three numbers = 180
First : Second = 3 : 5
Second : Third = 4 : 7
To make the second equal,
First ratio × 4 → 12 : 20
Second ratio × 5 → 20 : 35
Therefore,
First : Second : Third = 12 : 20 : 35
Total division = 12 + 20 + 35 = 67
Second number = (20 / 67) × 180 = 53.73