Let’s call the number of gallons of 30% solution “x”. If we mix together 40 gallons and x gallons of solution, we’re going to come out with a total of 40 + x gallons of that 20% solution. Mathematically, this is
40(12%) + x(30%) = (40 + x)(20%)
With the percents as decimals:
40(0.12) + x(0.3) = (40 + x)(0.2)
Simplifying, we have:
4.8 + 0.3x = 8 + 0.2x
Collecting the x terms on one side and the constants on the other:
0.1x = 3.2
And multiplying both sides by 10 to find x:
x = 32
So, you’ll need 32 gallons of 30% solution to yield 40 + 32 = 72 gallons of 20% solution.
The correct answer is that she picked 16 green peppers. We can work this
out because 16 + 4 = 20, and 4 x 4 is 16, so therefore there were 16
green peppers and 4 red peppers.
24 : 8 = 3 : 1 because 24 divided by 8 = 3 so
3 = 1
7 : 35 = 1 : 5 because 35 divided by 7 is 5 so
5 = 1
The answer to this question is c i think
Answer c or $31.08 is correct:)
