Each question below is followed by two statements A and B. You have to determine whether the data given in the statement is sufficient for answering the question. You should use the data and your knowledge of Mathematics to choose the best possible answer.
Give answer (A) if the statement A alone is sufficient to answer the question, but statement B alone is not sufficient.
Give answer (B) if the statement B alone is sufficient to answer the question, but statement A alone is not sufficient.
Give answer (C) if both statements A and B together are needed to answer the question.
Give answer (D) if either the statements A alone or statement B alone is sufficient to answer the question
Give answer (E) if you cannot get the answer from the statements A and B together, but need even more data.

X, Y and Z are three consecutive even numbers (not necessarily in this order). What is the sum of these numbers?
A. The difference between X and Z is 4.
B. One-third of Y is 14.

Two friends A and B invest in a business in partnership. B borrows 20% of A’s salary, combines it with 60% of his salary and invests with A, who puts all of his remaining salary. One year later the ratio of profit of A and B is 5 : 3 respectively and B returns Rs. 21000 to A which he borrowed from him. What is the difference between salary of A and B?

Anoop travels first 1/3 of the total distance at the speed of 10 km/hr. and the next 1/3 distance at the speed of 20 km/hr. and the last 1/3 distance at the speed of 60 km/hr. The average speed of Anoop is-

Two pipes P and Q can fill a cistern in 36 and 48 minutes respectively. Both pipes are opened together, after how many minutes should Q be turned off,so that the cistern be fill in 24 minutes?

By selling a table for Rs. 350 instead of Rs. 400, loss percent increases by 5%. The cost price of table is : 

If 80 % of a number added to 80 gives the result as the number itself, then the number is: