Step-by-step explanation:
We use

Now we have

Hope that useful for you
Answer:
5/8
Step-by-step explanation:
Explanation:
First you need to put the same base for both numbers, finding the minimum common multiple of 4 and 8, that's 8.
Turning 1/4 in a number with 8 as base: first, divide 8 : 4 = 2. Then multiply 1/4 x2 and it will be 2/8.
Then you're able to calculate it: keep the base and add the tops
2/8 + 3/8 = 5/8
AMOUNT OF GALLONS MULTIPLIED BY 8 :)
So the answers I got are:
D. 8
E. 15/2
F. 16/3