Question

the ages of two brothers are in the ratio 5:7 if the elder is 12 years 3 month old, what is the age of younger brother​

Answer 1

Answer:

Step-by-step explanation:

let age of younger bro be 5x

let age of elder brother be 7x

age of elder brother in months = 147

now,

7x=147

x=21

so age of younger brother = 21*5=105 months

=8 year 9 months

Answer 2

Given:

The ages of the two brothers are in the ratio 5:7. The elder is 12 years 3 months old.

To find:

The age of younger brother.

Solution:

The younger brother is 8 years 9 months old.

To answer this question, we will follow the following steps:

As given, we have,

The ages of the two brothers are in the ratio 5:7.

Let the common ratio be x.

So,

The age of elder brother = 7x

The age of younger brother = 5x

Also given,

The age of elder brother = 12 years 3 months = 147 months

So,

$7x = 147$

$x = 21 \:$

On putting the value of x in 5x, we get

The age of younger brother

$= 5(21) = 105 \: months$

$= 8 \: years \: 9 \: months$

Hence, the age of the younger brother is 8 years 9 months.