A certain substance has a solubility of 12 grams in 100 grams of water at 20°C. This means that .

Adelivery truck leaves a warehouse and travels 2.60 km north. the truck makes a left turn and travels 1.25 km west before making another right turn to travel 1.40 km north to arrive at its destination. what is the magnitude and direction of the truck's displacement from the warehouse?

Idon’t quite understand this problem

It is really hard for me right know