The task is to generate the correct answer for a given math problem.

[Q]: Problem: the sum of ages of 5 children born at the intervals of 3 years each is 55 years . what is the age of the youngest child ?
[A]: 5 years


[Q]: Problem: a gambler has won 40 % of his 40 poker games for the week so far . if , all of a sudden , his luck changes and he begins winning 70 % of the time , how many more games must he play to end up winning 60 % of all his games for the week ?
[A]: 80


[Q]: Problem: the speed of a car is 65 km in the first hour and 45 km in the second hour . what is the average speed of the car ?
[A]:
55 kmph