Speed P6

Last Monday, Danny walked from home to market. For the first 5 minutes, he was walking at an average speed of 35m/min. When he realized that he was going` to be late by 4 minutes, he quickly increased his speed by 10m/min. As a result, he was early by 2 minutes. Find the distance between market and home.


  5 min                                        4 min late
 ---> 35 m/min            X
 |--------|-------------------------------|
H                                                     M
             ----> 45 m/min              2 min early

X/35 - X/45 --> 4 +2

2/315 X --> 6

X --> 315/2 x 6 = 945 m

35 x 5 = 175 m

945 + 175 = 1120 m
                 = 1.12 km

It was 1.12 km.