SOLUTION: The coffee Jim likes is composed of 98.5% water and 1.5% cocoa. The coffee John likes is composed of 97% water and 3% cocoa. How many ounces of water, x, should be added to 20 o

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Question 1065533: The coffee Jim likes is composed of 98.5% water and 1.5% cocoa. The coffee John likes is composed of 97% water and 3% cocoa.
How many ounces of water, x, should be added to 20 ounces of coffee that John likes to make the coffee that Jim likes?
x = ___ ounces

Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
The coffee Jim likes is composed of 98.5% water and 1.5% cocoa.
The coffee John likes is composed of 97% water and 3% cocoa.
How many ounces of water, x, should be added to 20 ounces of coffee that John likes to make the coffee that Jim likes?
:
write an equation in terms of percent cocoa
.03(20) = .015(x+20)
.6 = .015x + .3
.6 - .3 = .015x
.3 = .015x
x = .3/.015
x = 20 oz of water added
:
:
The original AMT of cocoa is unchanged
.03(20) = .6 oz is the original amt of cocoa
Check the percent
.6/20 = .03 Johns
.6/40 = .015 Jims