The average of 1st 3 of 4 numbers is 6 and of the last 3 are 3. If the sum of the first and the last number is 13. What is the last numbers?	Choose the correct answer: A) 4 B) 2 C) 6 D) 7 E) 8
A + 2 + C = 18   2 + C + D = 9   A + D = 13   A – D = 9   A + D = 13   2D = 4   D = 2   ANSWER:2
<result>B</result>
The average of 1st 3 of 4 numbers is 6 and of the last 3 are 3. If the sum of the first and the last number is 13. What is the last numbers?