Answer: There is an easy answer for any problem like this. Be careful of the wording though. For this particular question, the answer is 40%
Step-by-step explanation: The reason for this is just to divide. Divide the total, or the 100% by the number your looking for. Basically, the 25 is the whole. 10 is a percent of that whole. Divided the whole by the percent and get 0.40. Convert that to a percentage and that would be 40%. There you go.