Directions: The following graph gives Sales, Expense and Capital of a company for a period of five years 1994 to 1998. Read the graph and answer the following questions.

What has been the simple average growth rate per annum of expense between 1994 and 1998?

Pipes A and B can fill a tank in 16 hours and 24 hours, respectively, and Pipe C alone can empty the full tank in x hours. All the pipes were opened together at 10:30 a.m, but C was closed at 2:30 p.m. If the tank was full at 8:30 p.m on the same day, then what is the value of x?

If the price of petrol increases by 19% and Sunitha intends to spend only an additional 12 % on petrol, by what percent should she reduce the quantity of petrol purchased?

If $$ x=(164)^{169}+ (333)^{337}-(727)^{726}$$ then what is the units digit of x?

To do a certain work, the ratio of the efficiencies of X and Y is 5:4. Working together, they can complete the same work in 10 days. Y alone starts the work and leaves after 5 days. The remaining work will be completed by X alone in:

A man starts from his house and travelling at 30 km/h, he reaches his office late by 10 minute, and travelling at 24 km/h, he reaches his office late by 18 minutes. The distance (in km) from his house to his office is:

If $$ {1+sinθ\over {1-sinθ}}={p^{2}\over{q^{2}}}$$, then sec θ is equal to:

The sides of a triangle are 56 cm, 90 cm and 106 cm. The circumference of its circumcircle is: