
Algebra PreAlgebra and Basic Algebra Math Forum 
 LinkBack  Thread Tools  Display Modes 
January 9th, 2017, 09:31 PM  #1 
Member Joined: May 2015 From: Australia Posts: 36 Thanks: 5  Algebra  Year 10 Problem Solving
Jay has 13kg of almonds costing \$5 per kg. How many kg of cashews costing \$12 per kg should be added to get a mixture of the two nut types which would cost \$7.45 per kg? The answer is: 7kg I don't know how to solve this problem. Could someone give me some hints? Last edited by skipjack; January 10th, 2017 at 02:52 AM. 
January 9th, 2017, 09:52 PM  #2  
Math Team Joined: Jul 2011 From: Texas Posts: 2,435 Thanks: 1197  Quote:
solve for x, the number of kg of cashews Last edited by skipjack; January 10th, 2017 at 02:52 AM.  
January 10th, 2017, 02:44 AM  #3 
Member Joined: Sep 2016 From: India Posts: 88 Thanks: 30 
$13(\$5) + x(\$12) = (13+x)(\$7.45)$ $65+12x=96.85+7.45x$ $12x7.45x=96.8565$ $4.55x=31.85$ $x=7kg$ 

Tags 
algebra, problem, solving, year 
Search tags for this page 
Click on a term to search for related topics.

Thread Tools  
Display Modes  

Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
Year 11 algebra  Fastsad  Algebra  5  January 13th, 2016 02:36 AM 
Algebra problem solving 3  kingkos  Algebra  2  January 7th, 2014 04:35 PM 
Algebra problem solving 2  kingkos  Algebra  2  January 6th, 2014 05:08 PM 
Algebra problem solving  kingkos  Algebra  2  January 6th, 2014 05:05 PM 
Algebra problem  Solving for b  Klyka  Algebra  6  December 21st, 2008 04:14 PM 