Nalini’s younger brother is 12 years old. If the ratio of the age of Nalini to that of her brother is 7 : 6, then what will be ratio in their ages 6 years hence?
Answer & explanation
Correct answer: option 1
Brother = 12 yrs
Nalini : Brother
7 : 6
⇒ 6 units = 12
⇒ 1 unit = 2
⇒ Nalini's age = 7 x 2 = 14
⇒ Both ages 6 yrs hence = 14 + 6 : 12 + 6
⇒ 20 : 18 = 10 : 9