Answer:
B And D
Step-by-step explanation:
B is for the number of donuts
D is for the cost of donuts
The answer is $820.
I found this by 0.8x = 656
(Remember, a 20% discount means that it costs 80%, or 0.8, of the original price)
Then, divide 0.8 on both sides:
0.8x/0.8 = 656/0.8
This leaves you with:
x = 820
Answer:
54 gallons
Step-by-step explanation:
Let x represent the volume of the full tank.
When the water tank is 30% full;
= 30% of x = 0.30x
when it is 20% empty:
= x - 20% of x = x - 0.20x = 0.80x
The difference is given as 27.
So, we can represent the question on an equation as;
0.80x - 0.30x = 27
Solving the equation, we have;
0.50x = 27
x = 27/0.50
x = 54 gallons
The tank can hold 54 gallons when it is full.