Question

sunil father is 3 times as old as sunil . after 10 years his age will be twice the age of his son. find their present ages.​

Answer 1

Let the current age of Sunil = x

Let the current age of father = y

thus,

his father's age => y = 3x

10 years hence,

father's age = (sunil's age ) × 2

y+ 10 = (x + 10)2

3x + 10 = 2x + 20

x= 10

thus,

Sunil = 10 years old,

father = 30 years old.

to verify,

10 years hence,

Sunil = 20 years and father = 40 years.

Answer 2

Answer:

The width of a rectangle is three- fourth of it's length. Find the dimensions of a rectangle if its perimeter is 28 m