Quantitative Aptitude - Arithmetic Ability Questions

In a class of 50 students there are 27 girls. The average weight of these girls is 45 kg and average weight of the full class is 49.6 kgs. What is the average weight of the boys of the class?

There are a total of 200 students in a school, of which 7/10th are boys. Find the number of girls in the school.

In a mixture of 45 litres, the ratio of liquid A and liquid B is 7 : 2. If 11 litres of liquid B is added to the mixture, then what will be the ratio of liquid A and liquid B in the new mixture?

If the difference between the measures of the two smaller angles of a right angled triangle is 8°, then the smallest angle is

Working together P, Q and R reap a field in 6 days. If P can do it alone in 10 days and Q in 24 days, in how many days will R alone be able to reap the field?

The 2nd and 8th term of an arithmetic progression are 17 and -1 respectively. What is the 14th term?

What is the value of 2sec2A?

If (7x -­ 13) ­ (12x + 3) = 14, then the value of x is ______ .