A boat running downstreams covers a distance of 30 kms in 2 hours. While coming back the boat takes 6 hours to cover the same distance. If the speed  of the current is half that of the boat, what is the speed of that boat in kmph?

A man buys 12 articles for Rs. 12 /- and sells them at the rate of Rs.1.25 per article. His gain percentage is: 

If x+y=10 and xy=4, then what is the value of x⁴+y⁴=?

Sadanand Fulzele, founder secretary of the Dr Babasaheb Ambedkar Smarak Samiti, who dies recently, belongs to which state?

In the following questions sentences are given with blanks to be filled in with an appropriate word(s). Four alternatives are suggested for each question. Choose the correct alternative out of the four and indicate it as your answer.

It is a well known _____that the lover of the sea craves for dry land, the age old ____to be where we are not.