SOLUTION: Pleaseee i neeed help with this If we add 2 gallons of water to a 40 % alcohol solution, we get a 35% solution. How many gallons of the solution did we have initially? and

Question 915062: Pleaseee i neeed help with this
If we add 2 gallons of water to a 40 % alcohol solution, we get a 35% solution.
How many gallons of the solution did we have initially?
and
Ashley ate 5 slices of pizza. Tiffany ate 2 (equal) slices. If Ashley ate 10/16
of the pizza, what fraction of the pizza was eaten?

Answer by josgarithmetic(39615) (Show Source): You can put this solution on YOUR website!
p is unknown quantity of 40 percent alcohol to start with.

gallons

The pizza:
5 slices is of the whole pizza.
1 slice is of the whole pizza.
Without further calculation on paper or on keyboard/screen, one-eighth of the pizza remains. ("mental" arithmetic may be sufficient, as long as analyzed well to find pizza for 1 slice).
-
How much was eaten? , 5 eighths plus 2 eighths.
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