The median of the numbers 14, 12, 12, 16, 13 and 18 is:

Pipes A and B, when working together, can fill an empty tank in 8 hours. If B is stopped after 2 hours, it will take a total of 11 hoursto fill the tank. How long would it take A to fill the empty tank alone?

Consider the given statement(s) and decide which of the given assumption(s) is/are implicit in the statement.
Statement:
Exercise improves overall health.
Assumptions:
I. Increased serotonin levels brings health benefits.
II. Exercise removes toxins naturally in the form of sweat.

The average expenditure per year during the period 2001-2006 is ......... (round off to the nearest integer).

An article was sold at Rs. 920 at a profit of 15%. Find the selling price to get a profit of 20%.