The ratio of efficiencies of Rahul and Ramesh to finish the same work is 4 : 5. Rahul worked alone for 8 days and then Ramesh joined him and worked for 16 days to finish the work. In how many days Rahul can finish the work alone?
Sunil is driving a car with a velocity of 40 kmph in the direction of the river along the river bank. A boat which is at a distance of 12 km from Sunil crossed him in 8 minutes by rowing against the flow of the river. If the river is flowing with a velocity of 4 kmph, then what is the velocity of the boat?
Three pipes A, B and C can fill a tank together in 8 hours. A and B can fill the tank together in 16 hours. A and B filled the tank for 8 hours and the remaining is filled by pipe C. What is the time taken by pipe C to fill the tank?
If a problem arise in your mind take help your best friend "mathematics.
yash singh
All I wanted to do was put together one of the best home maths systems in the world, and that's what we've done. I've loved numbers since I was two or three, and I get really excited about them. Now, I'm allowing myself to get excited about things. If you