Question

A girl is 17 years old. Her brother is twice her age. When the girl is 23 years old, what will be the age of the boy?​

Answer 1

Answer:

40...her brother is now 40 year

Step-by-step explanation:

if she is 17 her brother is 34(twice of her age...) difference between them 17 year... now her age is 23 , so her brother age will be 23+17=40

Answer 2

The age of the boy is 40 years

Step-by-step explanation:

Given:

girl's age = 17 years

brother's age is twice her age

To find:

age of the boy when the girl's age is 23 years old

Solution:

Let's assume the brother's age is 'x' years

According to the given condition

The brother's age is twice the girl's age

∴ x = 2 (17)

∴ x = 23 years

Thus, when the girl is 17 years old the brother is 23 years old

We see that the difference between their ages is

23 - 17 = 17 years

Again, when the girl is 23 years old the brother's age would be

23+ 17 = 40

∴ boy's age = 40 years

Therefore, the age of the boy is 40 years

#SPJ2