math
posted by patel .
a college lab paced two orders with a chemical supplier. the first order was for 13 bottles of calcium hydroxide solution and 4 bottles of sulfuric acid and totalled $ 487. the second order was for 6 bottles of calcium hydroxide solution and 2 bottles of sulfuric acid and totalled $232.the bills do not list per item price.what were the costs of one bottle of calcium hydroxide solution ad one bottle of sulfuric acid?

The trick to these problems is just setting up the equations:
13c + 4s = 487
6c + 2s = 232
Now you can forge ahead