Quantitative Aptitude - Arithmetic Ability Questions

7 litres mixture of milk and water contains 30% water. 3.5 litres of milk is added to this mixture. What is the percentage of water in the new mixture?

A non-zero number is greater than 7 times its reciprocal by 9.3. What is the number?

The selling price of an item inclusive of a 10% profit was Rs.440. What would be the percentage loss if the item was sold for Rs. 370?

The mean of 12 observations is 15. One more observation is included and the new mean becomes 16. The 13th observation is

Select the odd number from the given alternatives.

The value of -261+(-380)-(-521)+821-(-121)

What is the equation of the line whose y-intercept is -3 and makes an angle of 45° with the positive x-axis?

Rs 9000 is divided among P, Q and R in the ratio of 5 : 6 : 7. What is the share (in Rs) of R?