Mike spent $40 at the music store. He bought a cd for $20 and some cassettes for $4 each. How many cassettes did mike buy?
To find out how many cassettes Mike bought, we can subtract the cost of the CD from the total amount he spent.
Let's subtract $20 (cost of the CD) from $40 (total amount spent) to find out how much he spent on cassettes:
$40 - $20 = $20
Now, we need to figure out how many $4 cassettes can be purchased with $20.
We can divide $20 by $4 to find the number of cassettes:
$20 ÷ $4 = 5
Therefore, Mike bought 5 cassettes.