Amotorboat take 5 hours to travel 100 km going upstream. the return trip take 2 hours going downstream. what is the rate of the boat in still water? what is the rate of the current?

What properties allow transformation to be used as a problem solving tool

Some boys and girls were asked if they had a pet. one third of the group were boys. there were 20 boys. 20% of the girls had a pet. boys with a pet : girls with a pet = 1 : 5 i need to know how many girls there are.

Adesigner charges a one time fee of $200 plus $40 an hour for each project. write an expression to represent how much money the designer will make for a project