If a 500 kg load is to be lifted with a 100N effort using a first class lever, at what distance from the fulcrum must the effort be applied when the load is 20cm away
from the fulcrum?

Atruck driver is attempting to deliver some furniture. first, he travels 8 km east, and then he turns around and travels 3 km west. finally, he turns again and travels 13 km to his destination. what is the drivers distance