Mr. Khanna took a loan of Rs 10,000 on simple interest for two years at the rate 3% per annum. The total amount that he will be paying as interest in 2 year is 3% of his monthly salary. What his monthly salary?

The following pie-chart shows the study-time of different subject of a student in a day. Study the pie chart and answer the following questions.If the student studies 10 hours in a day, then he/she studies mathematic for

What approximate value should come in place of the question mark(?) in the following question?
5223÷36×0.93=?

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

The average speed of a train is 3 times the average speed of car. The car covers a distance of 520 km in 8 hours. How much distance will the train cover in 13 hours?

What approximate values should come in place of the question mark(?) in the following question?