33.68
27.4
x
--------
922.832
Answer:
Sammy charges less by $3.75
Step-by-step explanation:
givens
-Sammy: 21.75 for 3 hrs
-y=8x for Claire
-5 hours, and who charges less?
21.75/3
$7.25/hr
y=8(5)
y=$40
y=7.25(5)
y=$36.25
40-36.25
$3.75
Question says that Wong’s Garage buys quarts of motor oil by the gross (144 units) for $0.75 per quart.
That means cost of 1 quart motor oil = $0.75
Now it says that Wong’s changes the oil in customers’ cars and marks up the oil 175% of the cost.
So that means selling price of the 1 quart of the motor oil
= 175% of original price
= 175% of 0.75
= 1.75* 0.75
= 1.3125
Which is approx $1.31
Hence final answer is $1.31
