Quantitative Aptitude - Arithmetic Ability Questions

1/(secA + tanA) is equal to

If 2x-y2+(3y-2z)2=0,then the ratio of x:y:z is

A home theatre set is Rs. 4950. If two successive discounts of 20% and 15% are given, then its selling price is

Profit of Rs 728000 has to be divided among three partners Amir, Balaraj and Charan in the ratio 7:5:4. How much share (in Rs) does Charan get?

A boy starts from his house and walks at a speed of 5 km/hr and reaches his school 3 minutes late. Next day he starts at the same time and increases hisspeed by 4 km/hr and reaches 3 minutes early. What is the distance (in km) between the school and his house?

Working alone A can do the task in 27 hours and B can do it in 54 hours. Find C's share (in Rs) if A, B and C get paid Rs 4,320 for completing a task in 12 hours on which they worked together.

If a number is decreased by 10%, it becomes 54. To make it 72, it should be increased by

(1 + sec 20° + cot 70°)(1 - cosec 20° + tan70°) is equal to