Percentage Aptitude Questions for Competitive Exams

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? 

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

Two students appeared for an examination. One of them secured 9 marks more than the other and his marks were 56 % of the sum of their marks. The marks obtained by them are 

15 litres of a mixture contains alcohol and water in the ratio 1 : 4 , If 3 litres of Water is mixed in it , the percentage of alochol in the new mixture will be : 

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

In a moter of 120 machine parts, 5 % parts were defective, in another motor of 80 machine parts, 10 % parts were defective. For the two motors considered together, the percentage of defective machine parts were 

What percentage of the whole week does Ajay spend in office, if his office hours are 9 am to 5 pm from Monday to Friday? 

In two successive year 100 and 75 students of school appeared at the final examination. Respectively 75% and 60 % of them passed. The average rate of pass is:

In an election 10 % of the voters on the voter's list did not cast their votes and 60 voters cast their ballot paper blank. There were only two candidates. The winner was supported by 47 % of all the voters in the list and he got 308 votes more than his rival. The number of voters on the list was 

Ram saves 14 % of his salary while Shyam saves 22 % . If both get the same salary and Shyam saves 1540, what is the savings of Ram?