Question

100 is 25% of what number?

Answer 1

100 is 25% of 400
You could just divide 400 by .25 which you get 400 and to check your answer, you could multiply 100x4 which equals 400

Answer 2

400

100 divided by .25 equals 400
think of 25% of 100 which is 400, so 100 x 4 =400
Hope this helps