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5 votes
Nine is fifteen percent of what number?

User Guven
by
4.2k points

1 Answer

4 votes

We have:

Let x = unknown number

15% by x = 9 or


(15)/(100)\cdot x=9

And solve for x:


\begin{gathered} 100\cdot(15)/(100)\cdot x=9\cdot100 \\ 15x=900 \\ (15x)/(15)=(900)/(15) \\ x=60 \end{gathered}

Answer: the number is 60

User Peter Hedberg
by
4.6k points