Question

five year ago the average of A and B was 15 year. average age of a, b and c today is 20 years.how old will C after 10 years?

10 year
20 y
30 y
40 y​

Answer 1

Answer:

Correct Answer:

C) 30 yr

Step by step

Description for Correct answer:

According to the question,

=>P+Q2=20

=>P+q=40

and P+Q+R3=20

=>P+Q+R=60

On solving Eqs. (i) and (ii), we get

R = 20 yr

Therefore, Age of R after 10 yr from now

= 20 + 10 = 30 yr

Maine by mistake A ,B and C ki jagah P ,Q and R likh diya hai but phir bhi answer thik hai