What will be the change in the volume of a rectangular solid by increasing its length by 10 percent and decreasing its width by 10 percent?

Population of a city is 7000. In next year the population is increased by 8%, then find the new population?

The difference of two numbers is 15 % of their sum. the ratio of the larger number to the smaller number is: 

A book seller allowed 10 % discount on printed price. He gets 30 % commission from publisher. His profit in percent will be? 

The number of employers working in a farm is increased by 25% and the wages per head are decreased by 25%. If it result in x% decreased in total wages, then the value of x is : 

A student scored 32 percent and failed by 8 Marks. If he had scored 36 percent marks, he would have passed by 2 marks. What is the passing score?

Mr. Kulbhushan spends 35% of his income on food, 25% on transportation and 80% of the remaining on house rent. What percent of his income he is left with?

If price of the table is increased by 25%, then a person can buy 25 table less for Rs 25000. What is the original price (in Rs) of the table?