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17. Which of the ratios below has the same value as the ratio 7:9?
a. 6:8
b. 5:4
c. 14 : 16
d. 21:27

18. All of these ratios are in lowest term, except one. Which one is it?
a. 1:5
b. 2:4
c. 3:11
d. 7:12

19. The ratio of vases to flowers is 8 is to 12. What is the simplest form of 8 : 12?
a. 2:3
b. 3:2
C. 4:3
d. 3:4

20. If 3 ballpens cost P60, how much will a ball pen cost?
a. P 20
b. P 35
C. P 25
d. P 10​