What should come in place of question mark (?) in the following questions ?
For the following questions answer them individually
A profit of 25% is earned on goods when a discount of 20% is allowed on the marked price. What profit percentage will be earned when a discount of 10% is allowed on the marked price?
The compound interest on a certain sum for 2 years at 20% per annum is Rs.880/Â. The simple interest on the same sum for double the time at half the rate percent per annum is :
A tap can empty a tank in one hour. A second tap can empty it in 30 min If both the taps operate simultaneously, how much time is needed to empty the tank ?
When the price of sugar decreases by 10%, a man could buy 1 kg more for 270/Â. The original price of sugar per kg is :
A train passes a 50 m long platform in 14 sec and a man standing on a platform in 10 sec. The speed of the train is