Firstly, let's assume that the cost of 200 gallons of oil was x before the tax was added. So:
![1.08x = 425.52 \\ x = \frac{425.52}{1.08} \\ x = 394](https://tex.z-dn.net/?f=1.08x%20%3D%20425.52%20%5C%5C%20x%20%3D%20%20%5Cfrac%7B425.52%7D%7B1.08%7D%20%20%5C%5C%20x%20%3D%20394)
Before the tax was added, the cost of 200 gallons was $394. Now let's find the cost of one gallon of oil.
![394 \div 200 = 1.97](https://tex.z-dn.net/?f=394%20%5Cdiv%20200%20%20%3D%201.97)
Thus, the cost of one gallon of oil before the tax was added is $1.97
Answer:
a good estimate of the sum of 3 and 4/15 is 3 1/4.
Step-by-step explanation:
4/15 is close to 4/16, or 1/4, so a good estimate of the sum of 3 and 4/15 is
3 1/4.
Whats the better offer or the worse offer or is there a picture of the worksheet?
c=36+g
c:g:s=5:2:1
The ratio gives us two equations so that's three equations in three unknowns. Actually we're after the total t; let's put that in to solve for directly.
c:g:s:t = 5 : 2 : 1 : 5+2+1
We turn the ratio to fraction equations. s has the one; let's write everything in terms of s.
c/s = 5/1, g/s = 2/1, t/s = 8/1
Clearing the fractions,
c = 5s, g = 2s, t = 8s
Our other equation is
c = 36 + g
Substituting in for c and g,
5s = 36 + 2s
Solving,
3s = 36
s = 12
That's right; let's just get the total t.
t = 8s = 72
Answer: 72
Answer:
y + (x-4)
Step-by-step explanation:
4 less than x= x-4
y exceeds 4 less than x = y + (x-4)