Question

By what percent will a fraction increase if its numerator is increased by 60% and its denominator is decreased by 20%?

Answer 1

Lets just use $\frac{10}{20}$ for an example. If the number is increased by 60% and the denominator is decreased by 20% we get the new fraction being: $\frac{16}{16}$. Since then new one is equal to 1, and the original is equal to $\frac{1}{2}$, we see that this manipulation of the fraction causes an increase of 100%.