Answer:
The answer is D) 12
Step-by-step explanation:
Multiple 4 by 3
So.. first off.. let's keep in mind that if 30% of acid is there in a solution, say the solution is some amount of liquid and 30% of that total liquid only is the acid, so if the amount of the liquid is say "x", then 30% of that is just (30/100) * x, or 0.3x.
now, we'll do the same for the 55% and the 45%, use the decimal format to get how much quantity in the substance is of acid.
now, whatever "x" and "y" are, we know that
x + 60 = y, and we also know that
0.3x + 33 = 0.45y.
Answer:
1. 3/10, 0.30
2. 21/50, 0.42
3. 9/50, 0.18
4. 7/20, 0.35
5. 1/1, 1.00
6. 29/100, 0.29
7. 14/25, 0.56
8. 200/3, 6600.66
9. 1/4, 0.25
Step-by-step explanation:
Answer: B
Step-by-step explanation: