Math Problem : DD.27 Two persons go to house each other

The distance between Taro’s house and Jiro’s house is 960 m.
They walked from their house toward partner's house yesterday and today.
Taro left his house at the same time yesterday and today.
Yesterday Jiro left his house after Taro and they met at the place 648 m from the taro’s house.
Today Jiro left his house 5 minutes later than yesterday and they met at the place 768 m from Taro’s house.
It was 3 minutes later than yesterday.
Their speed of walking is always constant respectively.
Answer the following questions.

(1) Find the speed along which Taro and Jiro walk, respectively.

(2) Find the time which Jiro left yesterday in how many minute after the time when Taro left.







Answer
(1) Taro = 40 m/m, Jiro = 60 m/m
(2) 11 minute after