Find the simple interest on Rs. 3000 at 6 1/4% per annum for the period from
4th Feb., 2000 to 18th April, 2000
Two pipes A and B can fill a tank in 36 min. and 45 min. respectively. A water pipe C can empty the tank in 30 min. First A and B are opened. after 7 min,C is also opened. In how much time, the tank is full?
A is twice as good a workman as B and together they finish a piece
in 18 days. In how many days will A alone finish the work?
man buys an article for rs.27.50 and sells it for rs.28.50. find his gain %.
If 15 toys cost Rs, 234, what do 35 toys cost?