Quantitative Aptitude - Arithmetic Ability Questions

The mean of marks secured by 30 students in division-A of class X is 67, 55 students of division-B is 63 and that of 40 students of division-C is 61. What is the mean of marks of the students of three divisions of Class X?

Five men or ten women can complete a job in 20 days. In how many days can 3 men and 4 women complete it?

A and B together can do a piece of work in 36 days, B and C together can do it in 24 days. A and C together can do it in 18 days. The three working together can finish the work in

If a - b = 3 and a2+b2=25, then the value of ab is

What is the average of all numbers between 8 and 74 which are divisible by 7?

Select the odd word/letters/number/number pair from the given alternatives.

In the following question, four number pairs are given. The number on left side of (–) is related to the number on the right side of (–) with some Logic/Rule/Relation. Three are similar on basis of same Logic/Rule/Relation. Select the odd one out from the given alternatives.

If the shopkeeper sells an item at Rs 450 which is marked as Rs 600, then what is the discount he is offering?