Question

raju's father is thrice as old as raju. after 12 years, his age will be twice that of his son. find their present ages.

Answer 1

Answer:

The present ages of Raju and his father are 12 yrs and 36 yrs, respectively.

Step-by-step explanation:

Let Raju's age be R,

Let Father's age be F,

As raju's father is thrice as old as raju,

F = 3R (eq. 1)

After 12 years, father's age will be twice that of raju.

F + 12 = 2 (R + 12) (eq. 2)

Putting value of F from eq. 1 into eq. 2;

3R + 12 = 2 (R + 12)

∴ 3R + 12 = 2R + 24

∴ 3R - 2R = 24 - 12

∴ R = 12

Putting value of R in eq. 1;

F = 3 * 12

∴ F = 36

Thus, the present ages of Raju and his father are 12 yrs and 36 yrs, respectively.

Answer 2

.raju's father is thrice as old as raju. after 12 years, his age will be twice that of his son. find their present ages.