Quantitative and Numerical Ability Test - 9

How many diagonals does a 36-sided convex polygon have?

Two numbers ‘A’ and ‘B’ are such that two- third of the sum of 6% of A and 8% of B is equal to the sum of 5% of A and 4% of B. Find the ratio of the two numbers A : B.

Five years later the ages of A and B would be in a ratio 2 : 3 and five years ago, their ages were in ratio 3 : 5. What are the present ages of A and B?

Amit can write a page in 6 minutes, Barun can write a page in 10 minutes and Chetan can write a page in 12 minutes. What is the average number of pages wrote per hour per writer?

Ravi, Manas and Akshay takes 5 days, 6 days and x days respectively to do a work alone and together they take 2 days to complete the same work. Find x.

If the average of 10 numbers is zero, then how many of them, at the most, can be greater than zero?

A number when divided by a divisor leaves a remainder of 32. When thrice the original number is divided by the same divisor, the remainder is 18. What is the value of the divisor?

In a class, 60% of the students are girls. On a particular day, 70% of boy students were present. What was the fraction of girls who were present that day if the total number of students present that day was 80%?

9 balls are sold at Rs.30 and at 20% profit on cost price. What is the total profit?

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