86088 Topics

Cockroach Valentin announced that he can run at a speed of 50 m/min. No one believed him, and rightly so: Valentin had everything mixed up and thought there were 60 cm in a meter and 100 seconds in a minute. What is the actual speed (in "normal" m/min) at which Cockroach Valentin runs?
Valentin runs $50 \cdot 60=3000$ cm in 100 s, which means his speed is 30 cm/s, or 18 m/min.

## Answer

18 m/min.