A problem is given to three students whose chances of solving it are 1/2, 1/3 and 1/4 respectively. What is the probability that the problem will be solved?

A bag contains 50 P, 25 P and 10 P coins in the ratio 5: 9: 4, amounting to Rs. 206. Find the number of coins of each type respectively.

A grocer has a sale of Rs 6435, Rs. 6927, Rs. 6855, Rs. 7230 and Rs. 6562 for 5 consecutive months. How much sale must he have in the sixth month so that he gets an average sale of Rs, 6500 ?

If selling price is doubled, the profit triples. Find the profit percent ?

The smallest number, which when diminished by 3, is divisible by 21, 28, 36 and 45 is ?

A wholesaler sells 20 pens at the marked price (printed on the article) of 16 pens to a retailer. The retailer in turn sells them at the marked price . Determine the gain or loss per cent to the retailer.

A shopkeeper reduces the price of his goods by 50% at the time of sale. Initially the price was fixed to get a profit of 25% on selling price after allowing 10% cash discount. Find out his approximate percentage of profit or loss.

Ram Kumar sold his motor cycle to Mohan at a loss of 28%. Mohan spent $ 1680 on its repairs and sold the motor cycle to Sohan for $ . 35910, thereby, making a profit of 12.5%. Find the cost of the motor cycle for Ram Kumar.

A trader sells an article at a profit of 15%. If he had bought it for 15% less and had sold it for $ 7.80 less, he would have gained 20%. Find the cost price of the article.

Ramesh bought two boxes for $ 1300. He sold one box at a profit of 20% and the other box at a loss of 12%. If the selling price of both boxes is the same, find the cost price of each box.