145% of what number is 870?

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Answer 1 · 2018-01-05T06:27:23

600

To rephrase the question, it states that 145% of x = 870

X being the unknown number.

Let's convert percentage to decimal first

#(145%)/100=1.45#

So #1.45*X=870#

#1.45X=870#

We would want to isolate X to find the unknown number.

#(1.45X)/1.45=870/1.45#

#X=600#

The unknown number is therefore 600.

To check:
#145%# of # 600 = 1.45*600 = 870#