A bag contains forty coins, all of them either 2 cent or 5 cent coins. If the value of the money in the bag is $1.55, how many coins of each kind are there?
1 Answer
See a solution process below:
Explanation:
First, let's call the number of 2 cent coins:
Next, let's call the number of 5 cent coins:
We can then write to equations from the information in the problem.
Equation 1:
Equation 2:
Step 1) Solve the first equation for
Step 2) Substitute
Step 3) Substitute
The Solution Is:
There are:
-
15 two cent coins
-
25 five cent coins