Question

ajay age is younger than vijay by 4 years the sum of their ages is 21 years what is the age of ajay

Answer 1

Given information : Ajay is younger than Vijay by 4 years OR we can say Vijay is elder to Ajay by 4 years. Also we know sum of their age is 21

Solution: Let Ajay’s age be x
Therefore Vijay’s age is x+4
Next we can form an algebraic expression as
x+(x+4)=21 (since sum of ages is 21)
we get 2x+4=21
2x=21-4 or 17
Therefore x=17/2 or 8.5 years

Answer= Ajay’s age is 8.5 years or 8 years and 6months

Answer 2

Answer:

Ajay is presently 8.5 years old.

Step-by-step explanation:

Given :

Ajay is younger than Vijay by = 4 years

Sum of their ages = 21

To Find :

Ajay's age

Solution :

Let the Ages be -

• Vijay be x
• Ajay be (x - 4)

➠ (x - 4) + x = 21

➠ x - 4 + x = 21

➠ 2x - 4 = 21

➠ 2x = 21 + 4

➠ x = 25/2

➠ x = 12.5

Vijay's present age = 12.5

$\rule{300}{1.5}$

Ajay's Present age =

➠ 12.5 - 4

➠ 8.5

$\therefore$ Ajay is presently 8.5 years old.