Math Problem : DD.32 Moving by running and a car

Hanako and Taro go to B point 12 km away from A point.
Hanako rides a car from A point first and getting down on the way, runs the remaining distance.
Taro runs from A point and rides the car on the way which took down Hanako and returned immediately on the way and goes to B point.
They leave at the same time and the speed of the car is 48 km/h.

(1) Since both of them ran with the same speed, they arrived at B point 30 minutes after leaving.
Find the distance from A point of the place where Hanako got off the car.
Moreover, find the running speed per hour of Hanako.

(2) If Taro runs with the speed of 12 km/h, how many minutes and how many seconds does he arrive at B point earlier than Hanako?





Answer
(1) 9 km
9.6 km/h
(2) one minute and 30 seconds