18 is 45% of what ?
3 Answers
Explanation:
How to solve it:

#" "18 = 0.45x# 
#" "18/0.45 = x# 
#" "40 = x#
Explanation:
The proportion I like to use with these types of problems goes like:
Part/whole can also be written as "is/of"
So in this case:
 The part (is) is
#18#  The whole (of) is unknown to us  let's say
#x#  The percent (%) is
#45#
Now:
We can cross multiply to get:
Hope this helps!
Apr 20, 2018
Explanation:
Let
Divide both sides by
Check.