CHAPTER 4  Objective 7.1  Exercises

Name: ________________________



Score: ________________________

Solve.

1.  A motorboat leaves a harbor and travels at an average speed of 10 mph toward a small island. Three hours later a speed boat leaves the same harbor and travels at a rate of 18 mph toward the same island. In how many hours after the speed boat leaves will the speed boat be alongside the motorboat?

2.  Two cyclists start at the same time from opposite ends of a course which is 42 mi long. One cyclist is riding at 16 mph and the second is riding at 12 mph. How long after they begin will they meet?

3.  Two planes start at the same time from the same point and fly in opposite directions. The first plane is flying 30 mph faster than the second plane. In four hours they are 2880 mi apart. Find the rate of each plane.

Back