Question

Need help with 18-22

Answer 1

18. b 4/14
19. b 30/40
20. c 21/48
21. a 9/20
22. a 6/24

Answer 2

shown below

Explanation:

18) 4 x 1 = 4, 7 x 2 = 14, 4/14

19) 15 x 2 = 30, 2 x 20 = 40, 30/40

20) 3 x 7 = 21, 6 x 8 = 48, 21/48

21) 9 x 1 = 9, 10 x 2 = 20, 9/20

22) 3 x 2 = 6, 6 x 4 = 24, 6/24