A crate contains 300 coins and stamps. The coins cost $3 each and the stamps cost $1.5 each. The tot

A crate contains 300 coins and stamps. The coins cost $3 each and the stamps cost $1.5 each. The total value of the items is $825. How many coins are there?

Let c be the number of coins, and s be the number of stamps. We're given:

1. c + s = 300
2. 3c + 1.5s = 825

We have a set of simultaneous equations, or a system of equations. We can solve this 3 ways:

1. Substitution Method
2. Elimination Method
3. Cramers Method

No matter which way we pick, we get:
s = 50
c = 250