System of equations confusing.

Quadratic equations and inequalities, variation equations, function notation, systems of equations, etc.
Byteofserial
Posts: 1
Joined: Tue Jun 04, 2013 10:30 pm
Contact:

System of equations confusing.

Postby Byteofserial » Wed Jun 05, 2013 12:46 am

Currently working on system of equations. A certain word problem is confusing me.

A school made $1220 on its fundraiser by washing cars and recycling can.
Students were paid an average of $55 per car wash, and 35 for picking up cans.
There are four less people washing cars than picking up cans.
Write a system of equations to determine how many car washers there are.

jg.allinsymbols
Posts: 72
Joined: Sat Dec 29, 2012 2:42 am
Contact:

Re: System of equations confusing.

Postby jg.allinsymbols » Wed Jun 05, 2013 1:01 am

Byteofserial wrote:Currently working on system of equations. A certain word problem is confusing me.

A school made $1220 on its fundraiser by washing cars and recycling can.
Students were paid an average of $55 per car wash, and 35 for picking up cans.
There are four less people washing cars than picking up cans.
Write a system of equations to determine how many car washers there are.


Let x=amount of car washers
Let y= amount of can pickers

four less people washing cars than picking cans,

Account for the "how much school made":
and by substitution,


Return to “Intermediate Algebra”

cron