Question

The ratio of people who walk to school to people ride the bus to school is 1:7. If there are 13 walkers, how many students ride the bus?

Answer 1

Answer: 91 students ride the bus

For this problem, you can set up a proportion where:

w = those who walk to school

r = those who ride the bus to school

$\frac{w}{r} = \frac{w}{r}$

Then include the ratio (1:7) as a fraction (1/7) and the value that is known (13).

$\frac{1}{7} = \frac{13}{x}$

Cross multiply (create an "x").

$1 \times x = 7 \times 13$

$x = 91$