Quantitative Aptitude - Arithmetic Ability Questions

A can do a work in 15 days and B in 9 days. If they work on it together for 5 days, then what fraction of work is left?

Solve the following : 27 - [38 - {46 - (15 - 13 - 2)}]

A gun is fired at a distance of 6.64 km away from Ram. He hears the sound 20 seconds later. Then the speed of sound is

The ratio of ages of the father and mother was 11:10 when their son was born. The ratio of ages of the father and mother will be 19:18 when the son will be twice his present age. What is the ratio of present ages of father and mother?

Painter A can paint a house in 40 days and Painter B can do it in 60 days. With help of C, they did the job in 20 days only. Then, C alone can do the job in

Aman and Kapil starts from Delhi and Gwalior respectively towards each other at same time. They meet at Mathura and then take 196 minutes and 225 minutes respectively to reach Gwalior and Delhi. If speed of Aman is 30 km/hr, then what is the speed (in km/hr) of Kapil?

Solve the following : -1/4 { -45 - (-96) / (-32)} = ?

1/4 of 12?