Question

Gautam takes 5 hours to paint a wall and gambhir takes 6 hours to pain the ame wall. if they work together, how long will they take to paint the wall

Answer 1

Here Let the work done by Gautam in on day be

= 1 \div 5

Work done by Gambhir will be

1 \div 6

Total work done in 1 day by them will be

= 1 \div 5 + 1 \div 6

= 11 \div 30

Total work done in days

= 30 \div 11

Answer 2

1/(1/5+1/6) = 30/11 = 2.7 hours is the answer ..