Question

Kong took
\[15\%\] fewer seconds than Nolan took to complete his multiplication timed test. Kong took
\[85\] seconds.
How many seconds did Nolan take?

Answer 1

We can set up a proportion to solve for the number of seconds Nolan took. Let $x$ represent the number of seconds Nolan took. We have the proportion $\frac{85}{x}=\frac{100-15}{100}$. Solving this proportion gives $x=\frac{85}{85/100}=\boxed{100}$ seconds.