What is 90% of 120?

1 Answer
Nov 26, 2016

Answer:

I found: #108#

Explanation:

Our trick here is to think that a fraction in #%# land is the same as the correspondent in "number" land; so we can write:
#(100%)/(90%)=120/x#
Where #x# is the correspondent of #90%# in numbers.
Rearranging:
#x=120*(90cancel(%))/(100cancel(%))=108#