Math problems from the *free* official practice tests and
problems from mba.com
ASMAA997
Course Students
 
Posts: 33
Joined: Sat Apr 09, 2016 10:33 pm
 

Sam earned

by ASMAA997 Wed Jun 29, 2016 2:09 pm

this question is in the world problems book

Sam earned a $2000 , commission on a big sale , raising his average commission by $100.If Sam's new average commission is $900, how many sales has he made?

My way of solving this question is :

AxS=N

first :
as the new is 900 so , the old is 800

So , 800n=2000

the second will be :
900 ( n+1 ) = S

and i stop here , and I couldn't understand the book solution , may anyone explain it for me in details ?
RonPurewal
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Joined: Tue Aug 14, 2007 8:23 am
 

Re: Sam earned

by RonPurewal Sun Jul 03, 2016 4:22 am

this folder is for problems from the FREE GMAT Prep software from mba.com.

please re-post your question in the correct folder. thank you.