Posted by **Evy** on Friday, November 1, 2013 at 10:56pm.

The cost of an order of 10 computer disks and 3 packages of paper was $27. The next order was for 30 disks and 5 packages, and the cost was $65. Find the cost of a single disk and a single package of paper.

- Math -
**Steve**, Friday, November 1, 2013 at 11:10pm
10d + 3p = 27

30d + 5p = 65

from the first, we see

30d + 9p = 81

so, subtracting, we see that

4p = 16

p=4

so, d=2.50

- Math -
**Evy**, Saturday, November 2, 2013 at 12:55pm
the professor answer for the disk is $1.50 who's right?

- Math -
**Steve**, Saturday, November 2, 2013 at 3:43pm
well, I see I was wrong. Could you not check my answer?

## Answer this Question

## Related Questions

- Algebra 2 - you purchase 12 packages of wrapping paper. large packages cost $7...
- math - two computer disks and three notebooks cost $17 however, five computer ...
- finite math - a box contains 40 computer disks, 5 are defective. Three disks are...
- Algebra 1--Please, help me! - 1. The number of calculators Mrs. Hopkins can buy ...
- Math - Ms wanton recycles colored pencils in a box for use in her art class. She...
- Algebra 1--Please, help me! - 1. Jeffs builds model train layouts. He has $75 to...
- elementary and intermediate algebra - how to write the equation for the ...
- Accounting - You received an email from Carl the operations manager from the ...
- math - can someone write out the equations so i can solve this please. Midtown ...
- Algebra 1--how am I suppose to graph this?! - Jeff builds model train layouts. ...

More Related Questions