In an examination, 50% of the students passed in Science and 75% passed in Social Science, while 20% students failed in both the subjects. If 270 students passed in both subjects, find the total number of students who appeared in the exam?

The monthly income of Shagun and Komal together is Rs.28000. The income of Shagun and Komal is increased by 25% and 12.5% respectively. The new income of Komal becomes 120% of the new salary of Shagun. What is the new income of Shagun?

In a school there are 2000 students. On January 2nd, all the students were present in the school except 4% of the boys and on January 3rd, all the students are present in the school except 28/3% of the girls, but on both the days' number of students present in the school, were same. The number of girls in the school is –

In an election only two candidates A and B contested 30% of the voters did not vote and 1600 votes were declared as invalid. The winner, A got 4800 votes more than his opponent thus he secured 51% votes of the total voters on the voter list. Percentage votes of the loser candidate, B out of the total voters on the voter list is:

35 percent of a number is 1249.5. What is 78 percent of that number?

The prices of two articles are in the ratio 3 : 2 respectively. The price of the first article is increased by 40% and that of the second article is decreased by x%. If the new ratio of both the articles is : 7 : 3 then what is the value of x?

If A is equal to 20% of B and B is equal to 25% of C; then what percent of C is equal to A?

The radius of circle is increased by 1%. How much does the area of the circle increased?