To cover a certain distance with a speed of 60 km/hr, a train takes 15 hours. If covers the same distance in 12 hours, what will be its speed?

What is the smallest number to be added to 2203, so that we get the sum of a perfect square number?

Piyush is running at the speed of 8 km/h and he stops for 5 minutes at the end of every third kilometer. How much time will Piyush take to cover a distance of 56 km?

A, B and C did certain investments and the ratio of their time periods is 3 : 2 : 7respectively. Ratio of  the profits of A, B and C is 4 : 3 : 14 respectively. What is the ratio of the investments of A, B and C?

Direction : What should come in place of the question (?) in the following question.

$$ {\sqrt{441}}+ {(71)^{2}} -{(?)^{2}}=2707 $$

The value of a machine depreciates at the rate of 10% per annum. It was purchased 3 years ago. If its present value is Rs.53071.20, the purchase price of the machine was:

Direction : The table given below represents number of bikes of five different brands sold from 2001- 2005, with the help of data given in the table, answer the following questions.

If sales of Suzuki in the year 2006 is increased by 5% and sales of Yamaha decreased by 5%, then what is the difference of averages of sales of Suzuki in year 2001 and 2006 and average sales of Yamaha in 2002 and 2006?

The average of three numbers a, b and c is 2 more than c. The average of a and b is 48. If d is 10 less than c, then the average of c and d is: