Answer: I am really good at math so if you need help just say so
Given- 90% of runner completed the marathon.
out of which 30% are man.
To proof - let the total number of runner be y.
the men completed the marathon be 30% of the 90%.
thus we have
30% of 90% of y = 270
×
×y = 270
now solving the above equation
we get

Thus solving the equation
y = 1000
Thus the total runners of men who completed marathon be 1000.
Hence proved
Answer:
$60
Step-by-step explanation:
We need to find how much commission she earns on the 8,000
Since the total is greater than $5,000, we find 7.5% of her sales
7.5% x $8,000 = $60
Thus, our answer is
$60