Dr. (CDR) N K Natarajan Solutions for Chapter: Solved Papers, Exercise 2: Exercise

The average of five consecutive odd numbers is 61. What is the difference between the highest and lowest number?
 

Jayesh is twice as old as Vijay and half as old as Suresh. If the sum of Vijay's age and Suresh's age is 85 years, what is the age of Jayesh?
 

 A cricketer has an average of 30 runs in 14 innings. How many runs should he score in his next innings to achieve an average of 32 runs?
 

 What percentage of profit should be added to the cost price of an item so as to gain a profit of 33% after allowing 5% discount to the customer?
 

 If the manufacturer gains 10%, the wholesale dealer gains 15% and the retailer gains 25%, find the cost of production of a table. The retail price of table is Rs. 1262.
 

 A loss of 19% on a shirt gets converted into a profit of 17% when the selling price is increased by Rs. 162. What is the cost price of the shirt?
 

In an examination, $75\%$ of the total students passed in English and $65\%$ passed in Mathematics, while $15\%$ failed in English as well as Mathematics. If a total of $495$ candidates were passed in all subjects, then how many students appeared for the examination?

When the price of a product was increased by 15%, the number of items sold was decreased by 20%. What was the net effect?