In an examination, 30 percent of the students failed in English and 25 percent of the students failed in mathematics. If 15 percent of the candidates failed in both subjects, then what percentage of students passed in both subject.

The cost price of an article should be increased by what percentage so that after giving 20 percent discount on it, 44 percent profit is obtained?

The ratio of the students of one school is 3: 5 with the students of the other school, if in the first school there were 50 students more and in the second there were 80 students less then the ratio would be 5: 6. Find the total number of students in both schools.

What is the value of a⁵ × a⁷ ?

How many numbers can be completely divided to 240?

then the value of x is 

Direction : What should come in place of the question (?) in the following question.

Direction : What should come in place of the question (?) in the following question.

(47 × 588) ÷ ( 28 × 120)=?