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Mathematics 19 Online
OpenStudy (anonymous):

I need a perfect answer for this and fast answer. URGENT! Mix W- 3 cups of concentrate and 4 cups of cold water Mix X- 3 cups of concentrate and 5 cups of cold water Mix Y- 6 cups of concentrate and 9 cups of water Mix Z- 5 cups of concentrate and 8 cups of water. Ques: 1. If you made a single batch of mix W, what fraction of the batch would be concentrate? Answer the same question for mixes X Y and Z.

OpenStudy (anonymous):

(w-3)/(w+1) (x-3)/(x+2) (y-6)/(y+3) (z-5)/(z+3)

OpenStudy (anonymous):

I didn't get it :S Could you explain clearly?

OpenStudy (anonymous):

See, if you take the case of w, we have w-3 cups of concentrate.Now we add 4 cups of water, so the total number of cups becomes w-3+4 = w+1. Now the fraction of the concentrate is the number of cups of concentrate by the total number of cups of the batch, hence (w-3)/(w+1)

OpenStudy (anonymous):

OHHH! Thanks! :)

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