pa help po

SOLVE THE PROBLEM BY USING THE FOLLOWING FORMULAS

SPEED=DISTANCE/TIME
DISTANCE=SPEEDxTIME
TIME=DISTANCE/SPEED

1. A wheelchair racer finishes a 142m race in 20s. How can you calculate racer's average speed?

2. Alexa drives at an average speed of 43kph on a journey of 138km. How long does the journey take?

3. Aldriex runs at average speed of 7kph. if he runs for 5½ hours, how far does he travel?​