2. what percent of 80 is 60?
tell me in details of how to work it out or how to solve it

Aiden drives to school and back each day. the school is 16 miles from his home. he averages 40 miles per hour on his way to school. if his trip takes 1 hour, at approximately what speed does aiden drive home?

Anyone? 15m is what percent of 60m; 3m; 30m; 1.5 km?

Evaluate each expression. determine if the final simplified form of the expression is positive or negative -42 (-4)2 42