The answer is straightforward, by the "rule of product":
There are
3×8×2=48
3×8×2=48
different combinations (distinct possible cars) that can be created.
There 33 choices for body style; 88 choices for exterior colors, and 22 choices of interior color schemes:
Since each of these choices are independent (the choice of body style doesn't depend on exterior or interior color, e.g.) we multiply the number of choices for each quality to obtain: 3×8×2=483×8×2=48 distinct ways to create a car
He has paid 22 500 meanign that he says more than the car cost
There were 15 gallons of water to begin with. hope this helps
the initial statement is:

and then:

So the second statement is false because f should be multiply by e, not by d so is option C)