Quantitative Aptitude - Arithmetic Ability Questions

Average of the marks of 132 students of a college is 40. If the average of the marks of the passed students is 42 and the average of the marks of the failed students is 20, then what will be the respective ratio of the total marks of passed students and the total marks of failed students?

The ratio of present ages of Ramita and Satyajit is 9:7. After 9 years the ratio of their ages will be 5:4. What is Ramita's present age?

√(cosec2 -­ 1)/cosecA is equal to?

A mixture of 240 litres of juice and water contains 15% water. How much more water (in litres) should be added to this so that the strength of water will become 25% in the new mixture?

A man starts walking at 6.30 a.m. and wants to cover a distance of 30km. His initial speed is 6 kmph and after covering three-fifth distance, he reduces his speed by 2 kmph. At what time will he complete his walk?

Two fractions are such that their product is ­4 and sum is ­32/15. Find the two fractions.

The value of tan 315° cot (­ -405° ) is equal to

The selling price of an article is 8/5th of its cost price. Then the gain percentage is