Andrew M. answered • 10/10/17
Tutor
New to Wyzant
Mathematics - Algebra a Specialty / F.I.T. Grad - B.S. w/Honors
When you see things such as ...
Miles per hour ... divide miles by hours
Example: I drive 180 miles in 3 hours, what is my speed in miles per hour?
(180 miles)/(3 hours) = 60 miles/hr or 60 mph
Miles per gallon ... divide miles by gallons
Example: If I drive 250 miles on 10 gallons of gas what is my average
fuel consumption in miles per gallon?
(250 miles)/(10 gallons) = 25 miles per gallon or 25 mpg
Hours per day ... divide hours by days
If I work 48 hours over a period of 6 days, what is my hours per day (assuming
I work the same schedule each day)?
(48 hours)/(6 days) = 8 hours per day
Dollars per day... Divide $ by Days
Over 14 days Joe saved $42. What was his average daily savings?
($42)/(14 days) = $3 per day
The same logic applies to many situations. Shirts per bag ...
Donuts per box ... ....
In general:
x per y = x/y
Andrew M.
10/10/17