You collect baseball cards. Suppose you start out with 21. Maria takes half of one more than the number of baseball cards you have. Since you're nice, you give Peter 1 baseball card. Since his father makes baseball cards, Paul decides to triple your baseball cards. How many baseball cards do you have at the end?	Pick one
A) 17 B) 18 C) 19 D) 20 E) 27
Solution   Start with 21 baseball cards.   Maria takes half of one more than the number of baseball cards you have. So Maria takes half of 21 + 1 which is 11,   so you're left with   21 - 11= 
<gadget id="calculator">  21 - 11</gadget>
<output>10</output>
10.   Peter takes 1 baseball card from you:  10 - 1= 
<gadget id="calculator"> 10 - 1</gadget>
<output>9</output>
9 baseball cards.   Paul triples the number of baseball cards you have: 9 Ã— 3= 27 baseball cards.   So you have 27 at the end.   Correct answer : 27
<result>E</result>
You collect baseball cards. Suppose you start out with 21. Maria takes half of one more than the number of baseball cards you have. Since you're nice, you give Peter 1 baseball card. Since his father makes baseball cards, Paul decides to triple your baseball cards. How many baseball cards do you have at the end?