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?

 In a test consisting of 140 Questions, a candidate correctly answered 70% of the first 80 questions. What percentage of the remaining questions does the candidate need to correctly answer to score 60% in the test?

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

If of 75 % of one-eighth of a certain number is 179, then of three – fourth of that number is:

If X is 20% less than Y, then find the value of and

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?

In a competitive exam, the minimum qualifying percentages for Category A and Category B jobs are 25% and 45%, respectively. A candidate scored 83 marks and failed to get a Category B job by 25 marks. What is the minimum qualifying marks to secure a Category A job?