Posted by pam on .
Story Problem
Some friends are recording songs on a CD. The first 1/5 of the CD has Alex's songs.The next 12 minutes of songs are Henrique's. 1/3 of the time is Brian's songs. Sally has 32 minuites. How many minutes of music are there in all?

prealgebra..7th grade 
Quidditch,
If we add up everybody's time, we should get the total time of the CD.
Let M represent the total time of the CD. Everything will be in minutes.
M= (1/5)*M + 12 + (1/3)*M + 32
Combining terms...
(1  1/5  1/3)*M=44
Solve for M 
prealgebra..7th grade 
pam,
Thank you. We came up with 94 2/7 which is approximately 94mins, 17 secs.

prealgebra..7th grade 
Quidditch,
Good!
That is what I got, also. 
prealgebra..7th grade 
Ryan,
the quotient of eight and twice a number

prealgebra..8th grade 
caleb causey,
I need help withrational numbers