<h3>
Answer: 4 people</h3>
Work Shown:
2/5 = 0.4
(10 people)/(1 hour) = (x number of people)/(0.4 of an hour)
10/1 = x/0.4
10*0.4 = 1*x
4 = x
x = 4
She can check out 4 people in 2/5 of an hour.
Note: 2/5 of an hour = (2/5)*60 = 24 minutes
X = 21
ABC has a scale factor of 3, so each value is x3
7x3 = 21
m=1 is the answer for that question