Select all ratios equivalent to 5:2

A) 25:10
B) 10:4
C) 4:1

The answers are both A) and B).

It is A) because you multiply 5 times 5 which equals 25, and 2 times 5 equals 10.
It’s is B) because you multiply 5 times 2 which equals 10, and 2 times 2 which equals 4.
In conclusion both of these ratios — 25:10 & 10:4 — are proportional, or equal, to 5:2.

I hope this helps!! :)