While selling a cooler, a shopkeeper gives a discount of 10% on the marked price. If he gives a discount of 12% he earns ₹ 35 less as profit. The marked price of the cooler is 

Two pipes P and Q would fill a cistern in 24 hours and 32 hours respectively. If both pipes are opened together, find when the pipe “P” must be turned off so that the cistern may be just filled in 16 hours-

The difference between the simple interest and the compound interest on a certain amount at 5% for two years is 25, what is the amount?

A Shopkeeper marks his goods 20 % above its cost price and gives 15 % discount on the marked price. Find the gain?

Six years ago, the ratio of the ages of Karn and Sahil was 6 : 5. Four years hence, the ratio of their ages will be 11 : 10. What is Sahil’s age at present?

A certain number of students from school X appeared in an examination and 30% students failed. 150% more students than those from school X, appeared in the same examination from school Y. If 80% of the total number of students who appeared from X and Y passed, then what is the percentage of students who failed from Y?

The diagonal of a right angle isosceles triangle is 5 cm. Its area will be

Direction: Study the following information to answer the questions.

In hotel B, the ratio of female customers on Tuesday and Friday was 2 : 3. If on Friday, female customers constituted 50% of the number of customers (male + female), then what was the number of customers (male + female) in hotel B on Friday?