Answer fast! Please
Arun can paint a wall in 6 hours, Varun can paint the same wall in 8 hours, and Tarun can paint it in 10 hours. The time taken to paint the wall if:

(Express your answers as fractions in their simplest form.)

Varun and Tarun paint it together is

hours.

Arun and Varun paint it together is

hours.

Arun and Tarun paint it together is

hours.

All three paint it together is

hours.


Answer should be in fraction.

If you keep useless answers, I will report.