Question 35

Average age of 3 children born at intervals of 2 years is 8. How old is the eldest child?

Solution

Share

let the age be x

ages are x, (x+2),(x+4)

avg = $$\frac{x+ (x+2)+(x+4)}{3}$$

8 =  $$\frac{3x+6}{3}$$

x =6

so eldest child = (x+4) =10years

Was this solution helpful?

Get AI Help

Create a FREE account and get:

  • Download RRB Study Material PDF
  • 45+ RRB previous papers with solutions PDF
  • 300+ Online RRB Tests for Free

Join CAT 2026 course by 5-Time CAT 100%iler

Start your IIM journey with the right preparation and crack CAT 2026.

Enroll Now
Ask AI