Question

In a jar of marbles 9 out of 15 marbles are purple. Of there are 400 marbles in the jar, how many of th are not purple?

Answer 1

Answer:

C) 160

Step-by-step explanation:

Set up a proportion:

$\frac{9}{15}$ = $\frac{x}{400}$

Cross multiply and solve for x:

15x = 3600

x = 240

This means in 400 marbles, 240 are purple.

To find how many are not purple, subtract 240 from 400:

400 - 240

= 160 marbles

So, 160 marbles are not purple