- A) 2
- B) 1
- C) 8
- D) 2.5

**Correct Answer:** **A) 2**

### Related Question:

- » Three maths classes: X, Y, and Z take an algebra test. The average score of class X is 83. The average score of class Y is 76. The average score of class Z is 85. The average score of class X and Y is 79 and the average score of class Y and Z is 81. What is the average score of the combined classes X, Y, and Z?

A) 81.5 B) 81 C) 84.5 D) 82 Correct Answer: A) 81.5... - » Three math classes , X, Y , and Z, take an algebra test. The average score in class X is 83. The average score in class Y is 76. The average score in class Z is 85. The average score of all students in classes X and Y together is 79. The average score of all student classes Y and Z together is 81. What is the average for all the three classes?

A) 81.5 B) 81 C) 84.5 D) 82 Correct Answer: A) 81.5... - » The average of eight numbers in 14. The average of six of these numbers 16. The average of the remaining two numbers is 16. The average of the remaining two numbers is-

A) 8 B) 4 C) Data inadequate D) 16 Correct Answer: A) 8... - » The average of six numbers is 3.95. The average of two of them is 3.4, while average of the other two is 3.85. What is the average of the remaining two numbers?

A) 4.6 B) 4.5 C) 4.8 D) 4.7 Correct Answer: A) 4.6... - » The average age of a group of 10 students was 20. The average age increased by 2 years when two new students joined the group. What is the average age of the group. What is the average age of the two new students who joined the group?

A) 30 years B) 22 years C) 32 years D) 40 years Correct Answer: C) 32 years...