An interval of 3 hours 40 minutes is wrongly estimated as 3 hours 45.5 minutes. The error percentage is  

If the price of petrol increases by 19% and Sunitha intends to spend only an additional 12 % on petrol, by what percent should she reduce the quantity of petrol purchased?

What percent decrease in salary would exactly cancel out the 20 percent increase? 

In a exam, a student scores four marks for every correct answer and loses one mark for every wrong answer. If Rahul attempts all sixty questions and secures 130 marks, the no of questions Rahul attempted correctly is :

If A = 1300 and B = 1450, then B is approximately what percentage more than A?

If a number multiplied by 25 % of itself gives a number which is 200% more than the number, then 25% of the number is -

Present population of a town is 1,76,400. It increased by 5 % annually. The population of Town before 2 Years was….

In an examination P scored 25 marks less than Q. Q scored 45 more marks than R. T scored 75 marks which is 10 more than R. U's score is 80 less than maximum marks of the test. What approximate percentage of marks did U score in the examination if he gets 55 marks more than R?