II. To fill the table and calculate the average speed and average increased speed from 2017 to 2021. Year 2017 2018 2019 2020 2021 Speed (%) fixed basis 100 Increased link 9.00 15.00 speed(%) relative fixed basis 7.00 21.00 |

117. Two boats leave a marina at the same time. One travels south and the other travels north. The southbound boat travels 6 mph faster than the northbound boat. After 3 hr, the distance between the boats is 66 mi. Determine the speed of each boat.

5. Two locomotives 70 kilometers apart are travelling on the same track towards each other, Engine A moves at 22 kilometers per hour east and engine B moves at 13 kilometers per hour west. At the instant both trains begin moving, an annoying mutant fly begins flying from engine A towards engine Bat 33 kilometers per hour . The instant it touches B, it turns around and flies back. It goes on this way until the two locomotives collide and the mutant fly is finally squashed. So, before its untimely demise, determine the following: a. the total distance the fly flew b. the time it took till it was eliminated c. The average velocity of the fly

10. A person travels by car from one city to another with different constant speeds between pairs of cities. She drives for 25.0 min at 75.0 km/h, 16.0 min at 100.0 km/h, and 40.0 min at 50.0 km/h and spends 30.0 min eating lunch and buying gas. Determine the average speed for the trip. (km/h) Determine the distance between the initial and final cities along the route. (km)