Select all ratios equivalent to 20:5.

Answer:
40:10 & 8:2
Step-by-step explanation:
20 * 2 = 40
5 * 2 = 10
8 * 2.5 = 20
2 * 2.5 = 5
2:1 does not work because only 2 * 10 = 20, but 1 *10 = 10 and there is no 10. There is only 5.