Question

Dinesh is younger than rohan by 9 year. If their ages are in the ratio of 4:5, how old is dinesh?

Answer 1

Answer:

If their ages are in the respective ratio of 4:5, how old is Dinesh? Let Roshan's age be x years. Then, Dinesh 's age = (x - 9) years. x = 45 Hence, Dinesh's age = (x - 9) = 36 years.

Answer 2

$\large\boxed{Answer:}$

36 years is the age of Dinesh.

Given:

Dinesh is younger to Roshan by 9 years

Ages of Dinesh and Roshan are in the respective ratio 4:5

To find:

Age

Dinesh?

Solution:

Let the age of Roshan be x years.

Then, age of Dinesh = – 9 (given)

As ratio of ages is 4:5 $\bold{\frac{x-9}{x}=\frac{4}{5} }$,

$\bold{5x-45=4x,}\\\\\bold{5x-4x=45,\\\\\bold{x=45.}}$

age of Roshan is 45 years

age of Dinesh = 45 - 9 = 36 years

36 years is the age of Dinesh.