Quantitative Aptitude - Arithmetic Ability Questions

Two mixtures have milk and water in the ratio 1 : 4 and 3 : 2 respectively. In what ratio two types of mixtures have to be mixed to get a new mixture having ratio of milk and water as 1 : 1?

10 Consecutive numbers are given. If the average of the two numbers given in the middle is 13.5, then what is the sum of the first 6 numbers?

The mean of marks secured by 35 students in division A of class X is 65, 45 students of division B is 61 and that of 70 students of division C is 59. What is the mean of marks of the students of three divisions of Class X?

The average revenues of 9 consecutive years of a company is Rs 65 lakhs. If the average of first 5 years is Rs 60 lakhs and that of last 5 years is Rs 72 lakhs, find the revenue for the 5th year.

If the loss of percent on article is 15%. Then the ratio of the cost price and sell price will be

If sec2θ+tan2θ=3, then sec4θ-tan4θ =

If A and B are the roots of the equation Ax2 – A2x + AB = 0, then what is the value of A and B respectively?

If 2x+ 4(x - 3) < -2 - x < 2x - 1, then find the value of x.