The answer would be 20.
How?
7 + 9 = 16
16 + 4 = 20
25 * 5 = 25 + 25 + 25 + 25 + 25 = 175
Answer:
y=6
Step-by-step explanation:
You always want to do X first but here you just see the number under y and you can just see 6 is across im not good at explaining but im sure its 6
X = amount of the 18% solution
y = amount of the 40% solution
we know the 18% solution has only 18% of alcohol, the rest is maybe water or something, now, how many liters is 18%? well, 18% of anything is just (18/100) * anything, so, 18% of x is just (18/100) *x or 0.18x, and that's how many liters are there.
likewise, how many liters are there in the 40% solution? well, (40/100) * y, or 0.4y, that many.
we know the mixture has to yield 10 liters at 20% alcohol, how many liters of only alcohol is that? well, (20/100) * 10, or 2 liters.


how much of the 40% solution? well y = 10 - x
Answer:
none
Step-by-step explanation:
3−12+223−56=158
216−216=0
56+216=272
216+216=432
216−56=160
Brainliest?