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The age of the father is three times the age of the son. If the age of the son is 15 years, then the sum of the age of father and son is:
45 years
40 years
60 years
50 years
60 years
Calculate the father's age (3├Ч15=45) and add it to the son's age (15). Result: 45+15=60.
Age of son = 15 years, Age of father = 3 ├Ч age of son
Sum=F+S
Calculate the father's age (3├Ч15=45) and add it to the son's age (15). Result: 45+15=60.
Many students select 45 because they stop after calculating the father's age, forgetting to add the son's age to find the total sum.
Identify Father's age
Given that the father's age is three times the son's age of 15 years.
F=3├Ч15=45
Calculate the total sum
The sum of the father's age and the son's age is calculated as follows:
Sum=45+15=60
C is correct because the father's age is 45 years and the son's age is 15 years, so their sum is 60 years.
This type of ratio-based word problem appears frequently in Age/Percentage/Profit-Loss chapters; always identify the base variable first before proceeding to final calculations.
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