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Originally Posted by danny_boy
Strawberries contain about 15% solids and 85% water. To make strawberry jam, crushed strawberries and sugar are mixed in a 45:55 ratio, and the mixture is heated to evaporate water until the residue contains one-third water by mass. Draw and label a flowchart of this process, and use it too calculate how many pounds of strawberries are needed to make a pound of jam.
Now, I can set up the flowchart, but do I assume that initially I have 100 pounds, giving me 55 pounds of sugar, and 45 pounds of strawberries. And, of those 45 pounds of strawberries, 15% are solid, and 85% are water ?
My problem is the output. It has to also be 100 pounds right, but I cannot understand how to balance the sugar, water and solids, and how to determine how man pounds of strawberries are needed for 1 pound of jam. Please help!
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danny, perhaps i'm missing something here, but why are you looking to find 100 lbs. the problem is for 1lb? regardless, if you're trying to calculate how many lbs of strawberries you need, i would suggest not worrying about water. as i understand it, adopt 1 lb of finished product as your basis.
I think the only facts you need to worry about are:
1. you know that 2/3 of the jam will be solids from the strawberries + sugar.
2. you know the mixing ratio of strawberries to sugar
3. you know how much of the strawberries are solids.
If that doesn't help, then post back.