Quantitative Aptitude - Arithmetic Ability Questions

The sum of ages of Ram and his son is 48. If his uncle's age is also included the average becomes 40. What is the age of Ram's uncle?

50 men can complete a work in 28 days. They started the work together, but at the end of each 10th day, 10 men left the job. The work was completed in how many days?

A number is increased by 84, it becomes 107% of itself. What is the number?

If secA - tanA = x, then the value of x is

If 2A = 3B = 8C; What is A : B : C?

∆XYZ is right angled at Y. If CosecX = 17/15, then what is the value of CotZ?

Painter 'A' can paint a house in 10 days and 'B' can do it in 20 days. With help of 'C', they did the job in 5 days only. Then, 'C' alone can do the job in:

One tap can fill a water tank in 50 mins and another tap can make the filled tank empty in 75 mins. If both the taps are open together, already half filled tank would be full in