In a driving competition, ali and bilal drove the same course at average speeds of 64 miles per hour and 80 miles per hour, respectively. if it took ali 50 minutes to drive the course, how long did it take bilal?

40 minutes.

Step-by-step explanation:

Bilal's speed is 80/64  = 5/4 times  Ali's speed.

So, by proportion, Bilal will take 50 / 5/4 minutes to drive the course.

50 / 5/4

= 50 * 4/5

= 200/5

= 40 minutes.

7. d. 64

8. i. 32

9. c. 125

10. j. none of the above

11. d. 81

12. i. 216

13. e. none of the above

14. g. 240

15. e. none of the above

16. g. 32

17.   e. none of the above