Quantitative Aptitude - Arithmetic Ability Questions

A man spends a part of his monthly income and saves the rest. The ratio of his expenditure to the saving is 61 : 6. If his monthly income is Rs.8710, the amount of his monthly savings is

A line passing through the origin perpendicularly cuts the line 3x - 2y = 6 at point M. Find M?

A book is sold at three successive discounts of 20%, 20% and 10%. What is the net discount (in percentage)?

A line passing through the origin perpendicularly cuts the line 2x + 3y = 6 at point M. Find M?

The flight fare between two cities is increased in the ratio 9:11. What is the increase (in Rs) in the fare, if the original fare was Rs. 18,000?

2cos[(C+D)/2]sin[(C-D)/2] is equal to

2*[­0.3(1.3 + 3.7)] of 0.8 = ?

A mobile plan costs Rs. 32 for 6 minutes. What is the approximate cost, in rupees, for 4 minutes?