Problema Solution
A gas station sells a total of 4500 gallons of regular gas and premium gas in one day. The ratio of gallons to regular gas sold to gallons of premium gas old is 7:2. How many gallons sold were regular gas? Premium gas?
Answer provided by our tutors
Let
x = gal of regular gas
y = gal of premium gas
x + y = 4500
x : y = 7 : 2 cross-multiply
7y = 2x
We have the following system of equations:
x + y = 4500
7y = 2x
........
click here to see the system of equations solved for x and y
.......
x = 3,500 gal
y = 1,000 gal
There were 3,500 gallons of regular and 1,000 gal of premium gas sold.