Question 9
Ratio, Percentages and RatesThe ages of three men are in the ratio 3 : 4 : 5. If the difference between the ages of the oldest and youngest is 18 years, find the sum of the ages of the three men.
- A.45 years
- B.72 years
- C.108 years
- D.216 years.
Show the answer and explanation
Answer: C (108 years)
Explanation
The difference is 5 − 3 = 2 parts = 18 years, so 1 part = 9. Sum = 12 parts = 108 years.