Question

Olaf has 250 files saved on external hard drive of those files 12% are photos a write a percent equation to find the number of files that are photos be how many photos does Olaf have saved on his external hard drive

Answer 1

250 / x = 100 / 12

when /=divided by

Answer 2

He has 250 files saved on his hard drive.

12% are photos.

Cent means 100, so percent is per 100.
12% = 0.12.

In order to find how many photos he has, multiply the initial number by the percent. 
The equation to find the number of pictures is:
250*0.12.

250*0.12=30.

Olaf has 30 photos on his hard drive.