Excluding stoppages, the speed of a bus is 80 kmph and including stoppages, it is 60 kmph. For how many minutes does the bus stop per hour?

The cost price of 60 articles is same as the selling price of x articles. If there is a profit of 20%, then what is the value of x?

Find the value of given expression.

3 – (– 6) {– 2 – 9 – 3} ÷ 7{1 + (– 2) (– 1)}

Sheela’s salary is 60% of Reeta’s salary and 80% of Anshu’s salary. If Reeta’s salary is Rs. 16000, what is the difference between the salary of Sheela and Anshu?

By Selling 90 pens for Rs. 80 a man loses 20%. What should be the selling price (in Rs.) of 90 pens for 20% profit?

In how many different ways can the letters of the word ‘CREAM’ be arranged?

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

8424÷ 135 ×6=?

The angle of elevation of the top of a building at a distance of 70 m from its foot on a horizontal plane is found to be 60°. Find the height of the building.