Question

Sum of the ages of three friends is $x$, what is the sum of their ages after $3$ years?
A. $x + 3$
B. $x + 9$
C. $x + 6$
D. $x$

Answer 1

Hint: Here first of all understand the given data and find the required expression accordingly. Here use the concepts of sum and the multiplication to get the value for the solution. Here three friend’s ages are asked after three years. So, add the number of years in the present age.

Complete step by step answer:
Given that the sum of the ages of the three friends is “x”.The sum of the ages of the three friends after $3$ years will be equal to the sum of the present age with the product of three with three.The sum of the ages of the three friends after three years $ = x + 3(3)$
Simplify the expression finding the product of the terms -
The sum of the ages of the three friends after three years $ = x + 9$

Hence, option C is the correct answer.

Note: Read the given word statements properly and convert the given statements in the form of the mathematical expressions. Always remember that when the age is to find “after” a few years the number of years is to be added whereas when the age is given “before” a few ages then subtraction is used.