Answer: -0.85
Step-by-step explanation:
3/10 + 1/5 = 1/2
1/2 x -4.25 = -0.85
Solution
- 89 gallons contains 40 gallons twice such that:

- This means that we can find at least 200% of 40 gallons in 89 gallons. This gives us what to expect.
- To get the percentage we are looking for, we should use the formula:

New, in this case, is 89 gallons, Old is 40 gallons.
- Thus, we can calculate the percentage as follows:

Thus, the answer is 222.5%
0.93 = 0.9
0.18 = 0.2
0.9 + 0.2 = 1.1
Answer 1.1
Its parallel so they are equal
7x-40=5x+10
2x=50
x=25