Question

the present age of Mohit is thrice the age of his sister Rashi after 4 years his age will be twice the age of a sister of Andhra combined is after 4 year​

Answer 1

Step-by-step explanation:

let the age be 3x

x+4

x+4=x+8

2x=4

x=4

hence the age is 8 years

Answer 2

The present age of Mohit is 12 years and his sister is 4 years old.

Step-by-step explanation:

Let the present age of Mohit be x and his sister's present age is y.

According to the given condition,

x=3y --- (i)

After 4 years, age of Mohit will be x+4 and his sister's age will be y+4;

According to the condition given for 4 years,

(x+4) = 2 (y+4) ----(ii)

By (i), we know that x=3y

Therefore rewriting the equation (ii), we get

3y + 4 = 2y + 8

3y - 2y = 8 - 4

y = 4

Therefore the present age of Andhra is 4 years.

By equation (i)

x = 3y

x = 3 x 4

x = 12

Therefore the present age of Mohit is 12 years.