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April 13th, 2018, 01:43 AM   #1
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Please help!

(b) I have f kilogrammes of flour. I discard 5% because it is bad. I divide the remainder up in the ratio of 4:7:8 between Jack, Jill and Jake who each pay me w pounds per kilogramme. Jill gives Jake y kilogrammes of her flour; Jake sells all of his flour for z pence per 100 grammes. How much profit does Jake make?

My answer was (20fz+50yz-2fw)/5, but the answer is 4fw-(4fz/10 + y)/100
How do you solve this?
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April 13th, 2018, 03:50 AM   #2
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Hint:
f less 5% = .95f
95 / (4+7+8 ) = 5
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April 16th, 2018, 07:30 AM   #3
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Quote:
Originally Posted by Student2018 View Post
(b) I have f kilogrammes of flour. I discard 5% because it is bad. I divide the remainder up in the ratio of 4:7:8 between Jack, Jill and Jake who each pay me w pounds per kilogramme. Jill gives Jake y kilogrammes of her flour; Jake sells all of his flour for z pence per 100 grammes. How much profit does Jake make?[

My answer was (20fz+50yz-2fw)/5, but the answer is 4fw-(4fz/10 + y)/100
How do you solve this?
Neither of those answers makes sense because are there are no units given! Is this in "pence" or "pounds"?

The cost to Jake was given in "pounds per kg" but his selling price was in "pence per gramme". How did you convert?

Last edited by Country Boy; April 16th, 2018 at 07:36 AM.
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