The charges per hour of internet surfing is increased by 25% then find the percentage decrease in the time period of sur…

The daily wages of A and B respectively are Rs. 3.50 and Rs. 2.50. When A finishes a certain work, he gets a total wage …

X can do a piece of work in 40 days. He works at it for 8 days and then Y finished it in 16 days. How long will they tog…

A and B can complete a piece of work in 12 and 18 days respectively. A begins to do the work and they work alternatively…

A pipe can fill a tank in 0.9 hours and another pipe can empty in 0.7 hours. If tank is completely filled and both pipes…

A can do a piece of work in 10 days, B in 15 days. They work for 5 days. The rest of the work was finished by C in 2 day…

A man can do a piece of work in 30 hours. If he works with his son then the same piece of work is finished in 20 hours. …

A tank can be filled with water by two pipes A and B together in 36 minutes. If the pipe B was stopped after 30 minutes,…