Posted by **hayden** on Tuesday, October 5, 2010 at 8:00pm.

box of chalk and 2 staplers cost $10.00. Three boxes of chalk and 2 staplers cost $18.00. How much is a box of chalk and a stapler?

- math -
**lindsey**, Tuesday, October 5, 2010 at 8:03pm
x is box of chalk

y is staplers

x + 2y = 10

3x + 2y = 18

solve for x and then plug in and solve for y

- math -
**Jen**, Tuesday, October 5, 2010 at 8:23pm
x+2y=10

3x+2y=18

Multiply the first equation by -1 to cancel the y's:

-x-2y=-10

3x+2y=18

Now add the rows

2x=8

x=?

Now plug that back into either original equation to solve for y.

- math -
**Anonymous**, Friday, June 13, 2014 at 8:46pm
16

- math -
**ga**, Thursday, November 19, 2015 at 7:32pm
the answer is

## Answer This Question

## Related Questions

- math - A box of chalk and 2 staplers cost $10 Three boxes of chalk and 2 ...
- math - A box of chalk and 2 staplers cost $10. Three boxes of chalk and 2 ...
- Math - A box of chalk and 2 staplers cost $10. Three boxes of chalk and 2 ...
- math - A box of chalk and 2 staplers cost $10. Three boxes of chalk and 2 ...
- math - a box of chalk and 2 staplers costs $10. 3 boxes of chalk and 2 staplers ...
- math - how would you show his problem as a bar model A box of chalk and 2 ...
- Math - A box of chalk and 2 staples cost $10. Three box of chalk and 2 staplers ...
- math - Chalk contains calcium,carbon and oxygen in the ratio 10:3:12.Find the ...
- math - chalk contains 3% of carbon,10%of calcium & 12%of oxygen.find the amount ...
- Foreign languages - Can't you have the structure "have someone do something" in ...

More Related Questions