Mohan gets 4 marks for each correct sum and losses 1 marks for each wrong sum. He attempted 30 sum and obtains 50 marks. The number of sums solved correctly is? 

If the cost price of 15 tables is equal to the selling price of 20 tables. The loss percent is:

A dozen pairs of socks quoted at 180 are available at a discount of 20 %. How many pairs of socks can be bought for 48? 

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

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: