Question

Two ratios equivalent to 2:9.

Answer 1

B. 18:81

C. 12:54

Explanation:

2 : 9

choice 9:2

9 / 2 = 4.5

2 / 9 = 0.22

4.5 does not equal 0.22 so NOT equivalent

choice 18:81

18 / 2 = 9

81 / 9 = 9

9 does equal 9 so this is equivalent

choice 12:54

12 / 2 = 6

54 / 9 = 6

6 does equal 6 so this is equivalent

choice 18:4

18 / 2 = 9

4 / 9 = 0.44

9 does not equal 0.44 so NOT equivalent

choice 20:45

20 / 2 = 10

45 / 9 = 5

10 does not equal 5 so NOT equivalent

check:

B. 18:81

2 x 9 : 9 x 9 = 18:81

C. 12:54

2 x 6 : 9 x 6 = 12:54