Question

< 8000.
20.
The ratio between the preset ages of A and B is 4:3. IfB's present age is 21 years, what will be the ratio
of their ages 4 years hence ?
1 ​

Answer 1

Answer:

32:25 hence after 4 years of the ages of a and b

Answer 2

Given :

• The ratio between the preset ages of A and B is 4:3.

• B's present age is 21 years.

To find :

• The ratio of their ages 4 years hence =?

Step-by-step explanation:

Let, the ratio of the present age of B's = 3x.

We know that,

B's present age = 21 years [Given]

According to the question :

➟ 3x = 21

➟ x = 21/3

➟ x = 7

So, We will know that the value of x = 7.

Now,

Let, the ratio of the A's present age = 4x.

We know that the value of x = 7

So, 4x

= 4 × 7

= 28

Thus, The A's present age = 28 years.

Now,

A's age will be 4 years from hence = 28 + 4 = 32 years

Then, B's age will be 4 years from hence = 21 + 4 = 25 years

The ratio of their ages 4 years hence = A's age : B's age.

Substituting the values, we get

32 : 25

Thus, The ratio of their ages will be 4 years hence = 32 : 25