Formula one race cars can reach speeds of approximately 100 meters per second. what is this speed in meters per minute?

Set up multiplication/division of ratios to cancel out units you don't need for the final answer and introduce those that you do.

We have m/s and we want m/min so

(100m/s)(60s/min)=6000m/min

There is 240 red cars and there is 400 blue cars because 240/3=80 and 80*5=400