## Task 5

A pedestrian walks $5 \mathrm{~km}$ in one hour, a cyclist rides four times as fast, and a moped rider rides three times as fast as a cyclist.

How many more kilometers does a moped rider travel in one hour compared to a cyclist?
With a bicycle, one rides $20 \mathrm{~km}$ in one hour and with a moped $60 \mathrm{~km}$ in one hour. Consequently, a moped rider travels $40 \mathrm{~km}$ more in one hour than a bicycle rider.

### 12.15 26th Olympiad 1988

### 12.15.1 1st Round 1988, Class 3