SOLUTION: Prepare 5 gallons of 0.5 Diazinon solution using water and 20% Diazinon concentrate. What is the amount of concentrate that is necessary, how many ounces? I need help setting up

Question 4536: Prepare 5 gallons of 0.5 Diazinon solution using water and 20% Diazinon concentrate. What is the amount of concentrate that is necessary, how many ounces?
I need help setting up this problem. I can't figure out how to set it up.
Thank you,
Jim
Answer by adcoy(3) (Show Source): You can put this solution on YOUR website!
This question can not be solved with the given info. You indicate you have a .2 or 20% solution of diazapam. The problem does not say if this is .2 per gallon. If you assume it is .2 per gallon it doesn't matter how many gallons you add you will never reach a .5 concentration. If you are given a concentration of 20% solution of diazapam say, per 1/2 gallon, or pint or liter, or something along those lines you could solve this problem.
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