Question

Four years ago, the average age of a and b was 18 years. At present the average age of a, b and c is 24 years. What would be the age of c after 8 years

Answer 1

Answer:

40years

Step-by-step explanation:

a+b+c/3=23

a+B+C=72yrs     (EQUATION 1)

given a+B/2=18

a+b=36 (which is 4 yrs back ,so add 4 to this value)

a+b=40

substitute a+b in equation 1

c=32 yrs and adding 8 gives 40years