Fred owns an oil change shop and is doing some research on car colors. Saturdays are super busy, so currently there are 30 cars that are in line for an oil change: 5-Red, 7-
Black, 12 - Blue, and 6 - White. Fred has 4 lanes to do oil changes so there are always 4
cars chosen at a time. (Now remember that once the cars are picked for an oil change
they do not return - aka without replacement.)

1.8%

step by step

the final amount you will pay is $68.04.

the tip is determined by the pre-tax amount, so we calculate the tip based on the original bill, not after we've added sales tax.

to find the tip:

we can divide 54.00 by 100 to get 1% of 54. then we multiply that by 18.

54 / 100 = .54

.54 x 18 = 9.72

tip = 9.72$

to find the tax:

we can divide 54.00 by 100 to get 1% of 54. then we can multiply that by 8 to get 8%.

54 / 100 = .54

.54 x 8 = 4.32

tax= 4.32

now we can add the tip and tax to the bill to get our total.

54 + 9.72 + 4.32 = 68.04

total: $68.04

step-by-step explanation: