Gautam takes 5 hours to paint q wall and gambhir takes 6 hours to paint the same wall if they work together how long will they take to paint the wall
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The concept we will be using is that : Time is inversely proportional to the efficiency.
Gautam takes 5 hours to paint a wall, so his efficiency is 1/5. Similarly Gambhir's efficiency will be 1/6
1/5 + 1/6 = 11/30 (Total efficiency)
Total time taken = 30/11 hrs (Inverse of efficiency)
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