The speed of the parachutist is falling is 75m/s.
You have to express the speed of the fall in ft/s.
1m is equal to 3.3ft
To express the speed in ft per second, given that the time unit is the same, you have to multiply 75m/s by 3.3
The speed, expressed in feet per second, is 247.5ft/s
This means that the parachuter falls 247.5ft every second, to determine the distance fallen in 20 seconds, you have to multiply the speed by the time:
After 20 seconds he will fall 4950ft