
Algebra PreAlgebra and Basic Algebra Math Forum 
 LinkBack  Thread Tools  Display Modes 
December 30th, 2007, 02:17 AM  #1 
Newbie Joined: Dec 2007 Posts: 2 Thanks: 0  basic mathematics question on %s
Hi, i have a question which will probably be very easy for you guys, but i dont know the answer. Please show your workings.... I have a budget of 500,000 and 3 things to spend it on, A, B & C And we assume that A will cost 9 per hour, B costs 14 and C 15 per hour. How many hours each can we spend on each if we want 205 of the hours to be bought be A, 20% by C and 60% by C. Many thanks. Scott 
December 30th, 2007, 08:55 AM  #2 
Global Moderator Joined: Dec 2006 Posts: 21,103 Thanks: 2321 
I assume you mean that you buy some multiple of 20 hours of A, 20 hours of B and 60 hours of C. Those quantities would cost 20×9 + 20×14 + 60×15, i.e., 1360. Since your budget is 500,000, the multiple should be 500,000/1360, i.e., 367.647..., or 367.6 if you have to buy whole numbers of hours. Using 367.6, you buy 367.6×20 hours of A, i.e., 7352 hours of A, 7352 hours of B, and 22056 hours of C, using 499936 of your budget.

December 31st, 2007, 01:47 AM  #3 
Newbie Joined: Dec 2007 Posts: 2 Thanks: 0 
Thanks, very helpful.


Tags 
basic, mathematics, question 
Thread Tools  
Display Modes  

Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
5 basic discrete mathematics question (that I don't get)  OriaG  Applied Math  1  December 19th, 2012 06:55 PM 
Basic question  genieboy  Elementary Math  4  November 15th, 2012 04:28 AM 
Basic question  OriaG  Linear Algebra  1  November 7th, 2012 06:21 PM 
Basic question  Dudewithmathproblems  Algebra  12  February 6th, 2012 01:37 PM 
Basic Question In PDE  WannaBe  Applied Math  0  October 24th, 2010 01:36 PM 