16. Jahred can type 120 words in 5 minutes. About how many words would you expect him to type in 20 a. 240 b. 360 C. 480 d. 600 17. Four equal pumps can fill a tank in 42 minutes. How long will 6 pumps of the same kind fill the tank? a. 27 b. 28 c. 63 d. 11 18. The difference between two numbers is 40. They are in the ratio 9:7. What are the numbers? a. 60 and 20 b. 180 and 140 C. 50 and 10 d. 100 and 60 19. Express the given ratio in simplest or lowest terms to set up a proportion 8 hours to 10 hours a. 2:5 b. 4:5 c. 2:4 d. 8:10 20. The ratio of male teachers to female teachers in our school is 2:9. If there are 108 female teachers, how many teachers are male? a. 25 b. 34 c. 24 d. 30
