Which of the following ratios is not equivalent to 6:10?

3/5

9/15

48/80

24/45

The answer is 24/45

Let's check out all choices:

a) 6:10 = 3:5

6 * 5 = 10 * 3

30 = 30

Therefore, equivalent!

b) 6:10 = 9:15

6 * 15 = 10 * 9

90 = 90

Therefore, equivalent!

c) 6:10 = 48:80

6 * 80 = 10 * 48

480 = 480

Therefore, equivalent!

d) 6:10 = 24:45

6 * 45 = 10 * 24

270 ≠ 240

Therefore, inequivalent!