Quantitative Aptitude - Arithmetic Ability Questions

The mean of marks secured by 50 students in division A of class X is 61, 25 students of division B is 57 and that of 50 students of division C is 55. What will be the mean of marks of the students of three divisions of Class X?

Which of the following is a reductible fraction?

What is the area (in sq cm) of a circle whose circumference is 26.4 cm?

A student has to secure 35% marks to pass in a subject. If he gets 82 and fails by 23 marks. What is the maximum marks of the subject?

20% of a man's salary is paid as rent, 60% are his living expenses and 10% are his savings. If he spends remaining  30 on the education of his children, find his salary

If p/q = r/s = t/u = √5, then what is the value of [(3p2 + 4r2 + 5t2)/(3q2 + 4s2 + 5u2)]?

If 3x - 10 = -(2x + 5), then the numerical value of (x - 4)3 is

The ratio of two numbers is 3 : 7. If their product is 1344, then what is the sum of both the numbers?