Algebra Pre-Algebra and Basic Algebra Math Forum

 April 13th, 2018, 01:43 AM #1 Member   Joined: Apr 2018 From: On Earth Posts: 34 Thanks: 0 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?
 April 13th, 2018, 03:50 AM #2 Math Team   Joined: Oct 2011 From: Ottawa Ontario, Canada Posts: 14,112 Thanks: 1002 Hint: f less 5% = .95f 95 / (4+7+8 ) = 5
April 16th, 2018, 07:30 AM   #3
Math Team

Joined: Jan 2015
From: Alabama

Posts: 3,264
Thanks: 902

Quote:
 Originally Posted by Student2018 (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.

 Thread Tools Display Modes Linear Mode

 Contact - Home - Forums - Cryptocurrency Forum - Top