Question

If the ratio of tourists to locals is 3:4 and there are 120 tourists at the opening of a new muesum, how many locals are in attendance?

Answer 1

Let the number of locals be "x".

From the information given, we can write two ratios and equate:

$\frac{3}{4}=\frac{120}{x}$

We can easily solve for "x" by cross multiplication >>>

$\begin{gathered} \frac{3}{4}=\frac{120}{x} \\ 3x=4\times120 \\ 3x=480 \\ x=160 \end{gathered}$

So,

The