A Glee club of 20 members is performing two songs for the school talent show. 50% of its members are part of the first one, and 60% are performing in the second one. How many Glee club members are performing in both songs at the talent show?	Choose the correct option
A) 0 B) 1 C) 2 D) 3 E) 4
The total number of Glee club members is n=20.   The number of members performing the first song is 50% of it, thus   n (A)=50/100×20=10.   The number of members performing in the second one is 60%, thus   n (B)=60/100×20=12.   In order to calculate the number of Glee club members performing in both songs we can use the following equation:   n (AnB)=n (A)+n (B) -n =10+12-20=22-20= 
<gadget id="calculator">22-20</gadget>
<output>2</output>
2.   ANSWER: 2
<result>C</result>
A Glee club of 20 members is performing two songs for the school talent show. 50% of its members are part of the first one, and 60% are performing in the second one. How many Glee club members are performing in both songs at the talent show?