Question

The marching band at parkland high school has 128 students of these 18.75% are ninth graders how many ninth graders are there in the band

Answer 1

Hey, Melany. To answer this problem, simply set up a proportion: $\frac{18.75}{100} = \frac{x}{128}$. Now let's solve for x.

- Cross multiply:$\frac{18.75*128}{100*x} --> 2400 = 100x$

- Isolate x:

$\frac{2400}{100} = \frac{100x}{100}$

This means that x = 24.

There are 24 9th graders in the band.