SOLUTION: 63 students is 90% of how many students?

Algebra ->  Percentage-and-ratio-word-problems -> SOLUTION: 63 students is 90% of how many students?      Log On


   

Question 461464: 63 students is 90% of how many students?
Answer by MathLover1(20855) About Me  (Show Source):
You can put this solution on YOUR website!

let's number of students be x:
63+=+%2890%2F100%29x ....solve for x
63+=+%289cross%280%29%2F10cross%280%29%29x
63+=+%289%2F10%29x
63%2A10+=+9x
630+=+9x
630%2F9+=+x
70+=+x.....a number of students