84.2k views
1 vote
21 is 15% of what number?

1 Answer

2 votes
You do it like this:
15/100 = 21/x and cross multiply like this:
15x = 2100 ((Divide by 15 on both sides)
x = 140 (This is your answer)
I hope this helps you! Have a great night!

User Andrew Swan
by
5.6k points