Direction: Each of the questions consists of a question and two statements numbered I and II given below it. You have to decide whether the data provide in the statements are sufficient to answer the question. Read both the statements and Give answer.
(A) If the data in statement I alone are sufficient to answer the question, while the data in statement II alone not sufficient to answer the question;
(B) If the data in statement II alone are sufficient to answer the question, while the data in statement I all are not sufficient to answer the question;
(C) If the data either in statement I alone or in statement II alone are sufficient to answer the question;
(D) If the data even in both statements I and II together are not sufficient to answer the question;
(E) If the data in both statements I and II together are necessary to answer the question.

What is the ratio between number of black and white balls in a box?
I. Number of black ball is 5 more than the number of white ball.
II. Number of white ball is 80% of the number of black balls.

A merchant purchases a wrist watch for ₹ 450 and fixes its list price in such a way that after allowing a discount of 10%, he earns a profit of 20%. Then the list price of the watch is

Rehman walks at 8 km/hr and Roma cycles at 13 km/hr towards each other. What was the distance between them when they started if they meet after 36 minutes?

If a sum of Rs. 12500 is invested for 1 year at 12% per annum interest being compounded semi-annually, then interest earned is

The difference between the simple interest and the compound interest on a certain amount at 5% for two years is 25, what is the amount?

On selling an article for ₹651, there is a loss of 7%. The cost price of that article is

 A can do a piece of work alone in 30 days. B is 25% less efficient than A, while C is $$33{1\over 3}$$ % more efficient than B. In how many days can A, B and C, working together, complete the work?

Three numbers are in the ratio 1 : 2 : 3 and the sum of their cubes is 4500. What is the smallest number?