Which pair of ratios is not equal? 72 : 64 and 27 : 4 72 : 64 and 27 : 4 90 to 18 and 5 to 1 90 to 18 and 5 to 1 25 to 10 and 10 to 4 25 to 10 and 10 to 4 6 : 7 and 30 : 35

a) 72 : 64 and 27 : 4

Step-by-step explanation:

a) 72 : 64 and 27 : 4

72 /64 = 27/4

9/8 ≠ 27/4

Not equal

b) 90 to 18 and 5 to 1

90 : 18 = 5/ 1

5/1 = 5/1

Equal

c) 25 to 10 and 10 to 4

25 :10 and 10 : 4

25/10 = 10/4

5/2 = 5/2

Equal

d) 6 : 7 and 30 : 35

6/7 = 30/35

6/7 = 6/7

Equal

The pair of ratios that is not equal is

a) 72 : 64 and 27 : 4