To find the number of students playing football.

Question

In a school,42% students liked to play football and 24% liked to play tennis. The rest of the students chose swimming,how many students liked to play football?

Answer 1

You haven’t given us enough information to answer the question. However, whatever the number of students at the school, let’s call that number X. If you take that number, whatever it is, and multipy by 42%, you will have the number of students at that school who like to play football. Note that 42% is just another way of writing 42/100 (42 per every hundred).

Answer 2

You need to multiply 0.42 times number of students, but the latter fact has been omitted. Too bad!