A man bought three articles, each of which cost Rs 3000. He sold those articles at 10% profit, 5% profit and 15% loss respectively. What is the total profit/loss percentage earned by him?

In 64 liter of pure alcohol, 20 liter of water is mixed and then $$ {1\over 4}{th}$$ of the mixture is taken out. When x liter of water is added again then ratio of water to that of the alcohol becomes 1:2. Find value of x?

The ratio of the marks of Kamlesh in the examination of two subjects English and Mathematics is 7 : 11. If he got 20 marks more in Mathematics than in English, then how many marks did he get in English?

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 sum of ₹4000 is lent out in two parts, one at 8% simple interest and the other at 10% simple interest. If the annual interest is ₹352. The sum lent at 8% is

₹26100 is divided between Mohan and Shyam so that the interest that Mohan receives in 3 years is the same as that Shyam receives in 6 years. If the interest rate of 4% per annum then Mohan's share is :

If the angel of elevation of the sun decreases from 45⁰ to 30⁰, then the length of the shadow of a pillar increase by 60 m. The height of the pillar is

An aero plane flying horizontally at a height of 3 km. Above the ground is observed at a certain point on earth to subtend an angle of 60⁰. After 15 sec flight, its angle of elevation is changed to 30⁰. The speed of the aero plane (taking √3=1.732)