The ages of A and B are in the ratio 8 : 5. If the sum of their ages is 39 years, what will be the ratio of their ages after 9 years?
a) 3 : 2
b) 8 : 7
c) 10: 7
d) 11 : 8
e) None of these
Sum of ratios = 8 +5 = 13.
Sum of ages = 39 years
13 ratio = 39 years 1 ratio = 3 years
9 years = 3 ratio
new ratio = (8+3) : (5+3) = 11 : 8
Answer: d)