Listen A chemist needs to mix a 20% alcohol solution with a 60% alcohol solution to get 20
liters of a 42% alcohol solution. How many liters of the 20% solution should be
used? How many liters of the 60% solution should be used?
Use this many liters of the 20% solution:
A/
and this many liters of the 60% solution:
A

the answer is 200

step-by-step explanation:

the way the question is worded, it seems to imply the $264 interest is simple interest, not compound interest.

the simple interest for 2 years is $264; the simple interest for 1 year is $132.

$132 interest on a $600 investment means an interest rate of (132/600)*100 = 22%.

the value of $200 at 22% interest compounded annually for three years is

200%281.22%29%5e3

the amount of interest is that value, minus the original $200.

to complete this square you have to rotate about the origin 270 degrees clockwise.