Word Problem

[shanieO]

Need help with this question. I have no idea where to start.

A medical supply company has 1150 worker hours for production, maintenance, and inspection. Using this and other factors, the number of hours used for each operation, P, M, and I, respectively, is found by solving the following system of equations. Find P, M, and I.

P+M+I=1150
P=41-100
P=6M+50

Thanks
shanieO

 

[shanieO]

Second equation should read P = 4I-100 not the number 41

 

[stapel]

What method(s) have you learned for solving systems of equations? How far have you gotten?

For instance, if you're familiar with "substitution", then you probably used the last two equations to solve for I in terms of M. Plugging into the first equation, you would then get a new system of two equations in two variables. And so forth.

Please reply showing what you have done.

Thank you.

Eliz.