Question

B was born when A was 4 yr
7 months old and C was born when
B was 3 yr 4 months old. When C was
5 yr 2 months old, then their average
age was
(a) 8 yr 9 months
(b) 7 yr 3 months
(c) 8 yr 7 months
(d) 8 yr 11 months​

Answer 1

Answer:

9 yr 9 months

Step-by-step explanation:

I don't know

Answer 2

Answer:

 8 years 11 months

Step-by-step explanation:

A−B=4y7mA−B=4y7m ... (i)

B−C=3y4mB−C=3y4m ... (ii)

(+)

A−C=7y11mA−C=7y11m ... (ii)