Joseph had 16 baseball cards. He gave 3/8 of the cards to his brother and 2 cards to his brother. What percentage of the cards is left to Joseph?
Joseph gave 16 x 3/8 = 
<gadget id="calculator">16*3/8</gadget>
<output>6</output>
6 cards to his brother.
He gave a total of 6 + 2 = 
<gadget id="calculator">6+2</gadget>
<output>8</output>
8 cards to his brother and friend.
Joseph has 16 - 8 = 
<gadget id="calculator">16-8</gadget>
<output>8</output>
8 cards left.
This is 8/16 x 100% = 50% of his cards.

<result>50</result>