The cost price of 20 articles is the same as the selling price of x articles. If the profit is 25%, then the value of x is:
A train running at the speed of 60 km/hr crosses a pole in 9 seconds. What is the length of the train?
A, B and C can do a piece of work in 20, 30 and 60 days respectively. In how many days can A do the work if he is assisted by B and C on every third day?
A can do a work in 15 days and B in 20 days. If they work on it together for 4 days, then the fraction of the work that is left is :
© 2013 All rights Reserved | Design by Apnasolution