If the cost price of a pen is Rs.150 and its selling price is Rs.137.50, then calculate the percentage loss on the pen.

The cost price of 25 articles is equal to selling price of 20 ar­ticles. The gain percent is?

The marked price of a shirt is Rs. 1000. A shopkeeper offers a discount of 10% on the shirt and then again offers a discount of 20% discount on the new price. How much will you have to pay finally?

A watch was priced at Rs.800. After 2 successive discounts, it was sold for Rs.640. If the first discount was 10%, find the rate of the second discount.

A dealer makes a profit of 20% even after giving a 10% discount on the advertised price of a scooter. If he makes a profit of Rs. 7500 on the sale of the scooter, the advertised

A sum of money at simple interest amounts to Rs. 815 in 3 years and to Rs. 854 in 4 years. The sum is.

Reena took a loan of Rs. 1200 with simple interest for as many years as the rate of interest. If she paid Rs. 432 as interest at the end of the loan period, what was the rate of interest?

A lent Rs. 5000 to B for 2 years and Rs. 3000 to C for 4 years on simple interest at the same rate of interest and received Rs. 2200 in all from both of them as interest. The rate of interest per annum is:

A boat can travel with a speed of 13 km/hr in still water. If the speed of the stream is 4 km/hr, find the time taken by the boat to go 68 km downstream.

In one hour, a boat goes 11 km/hr along the stream and 5 km/hr against the stream. The speed of the boat in still water (in km/hr) is:

A motorboat, whose speed in 15 km/hr in still water goes 30 km downstream and comes back in a total of 4 hours 30 minutes. The speed of the stream (in km/hr) is

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

A can finish a work in 18 days and B can do the same work in 15 days. B worked for 10 days and left the job. In how many days, A alone can finish the remaining work?

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 alone can do a piece of work in 6 days and B alone in 8 days. A and B undertook to do it for Rs. 3200. With the help of C, they completed the work in 3 days. How much is to be paid to C?

A person crosses a 600 m long street in 5 minutes. What is his speed in km per hour?

An aeroplane covers a certain distance at a speed of 240 kmph in 5 hours. cover the same distance in 1 hours, it must travel at a speed of:

If a person walks at 14 km/hr instead of 10 km/hr, he would have walked 20 km more. The actual distance travelled by him is:

Pipes A and B can fill a tank in 5 and 6 hours respectively. Pipe C can empty it in 12 hours. If all the three pipes are opened together, then the tank will be filled in: