troublemaker676
Junior Member
- Joined
- Sep 1, 2005
- Messages
- 84
Hey guys, I was instructed to define two variables and two equations for this word problem:
Jordan pays 6 cents per minute for calls on her cell phone made during thw weekend. Jordan pays 24 cents per minute during the week. This month Jordan's bill was $44.40. She paid for 320 minutes. How many minutes did Jordan use her cell phone during the weekend?
I defined my variables
x= weekend minutes
y=weekday minutes
Set up my equations
x + y=320
.6x + .24y=44.40
Solved for y in the first equation
y=-1x + 320
I put that in for y in the other equation.
.6x + .24(-1x+320)=44.40
Solved for x
.36x-76.8= 44.40
.36x= 121.2
x=336.6666
Is this right, i thought it should come out to an even number, or should i just round and say it is 337 weekend minutes? Thank you for any help in advance!
Jordan pays 6 cents per minute for calls on her cell phone made during thw weekend. Jordan pays 24 cents per minute during the week. This month Jordan's bill was $44.40. She paid for 320 minutes. How many minutes did Jordan use her cell phone during the weekend?
I defined my variables
x= weekend minutes
y=weekday minutes
Set up my equations
x + y=320
.6x + .24y=44.40
Solved for y in the first equation
y=-1x + 320
I put that in for y in the other equation.
.6x + .24(-1x+320)=44.40
Solved for x
.36x-76.8= 44.40
.36x= 121.2
x=336.6666
Is this right, i thought it should come out to an even number, or should i just round and say it is 337 weekend minutes? Thank you for any help in advance!