Here is the answer...hope this helps:)
Answer:
28 l of 80%
42 l of 30%
Step-by-step explanation:
Target is 70 l of 50% solution
It will contain 70*0.5= 35 l of alcohol
x l of 80% solution and y l of 30% solution mixed to get the target solution
x+y=70 is the equation for total volume, and
0.8x+0.3y= 35 is the equation for the alcohol content. Solving this:
- y= 70-x
- 0.8x+0.3*(70-x) = 35
- 0.8x+21- 0.3x= 35
- 0.5x= 35-21
- 0.5 x= 14
- x= 14/0.5
- x=28 l of 80% solution
then
- y= 70-x= 70 -28 l= 42 l of 30% solution
Answer:
Step-by-step explanation:
This equals to 2/(1/5)+(1/5)/2.
=2 x 5+1/5 x 1/2
=10+1/10
=10 1/10 <---- This is mixed fraction, since you didn't want decimals.
V + 8 = 112 would be the correct equation because you are adding victors score to get to the product 112.
