Answer:multiply the percent times 100
Step-by-step explanation:
According to your description, you can simply plug in all the numbers:
d(47) = 2.15 * 45^2 / (58.4*0.34) = 219.27 m
ANSWER

EXPLANATION
To find the number of balloons that are purple, we have to find six-sevenths of 35.
That is:

That is the number of balloons that are purple.