Hanuman can complete a bridge in 10 days and Ravanan can complete the same bridge in 20 days. Now they are working together and they are completing the bridge in 20 days. What is the contribution of Ravanan in constructing the bridge?
(a) Half the work
(b) One-third of the work
(c) Two-fourth of the bridge
(d) Destructing the bridge

• Destructing the Bridge....
  Because if they work together the bridge can be completed in 20/3 days. Hence Ravann is destruction the Bridge
• 11 years agoHelpfull: Yes(18) No(2)
• ans : destructing the bridge
  if they both are doing positive work then they would have completed in less than 10 days but still they are consuming 20 days together,,so that means one of them is doing negative work.if hanuman is doing negative work then bridge wont get completed.. thus ravanan is doing negative work..and his contribution is destructing the bride
• 11 years agoHelpfull: Yes(9) No(0)
• Hanuman's work in 1 day is 10%
  Ravan's work in 1 days is 5%
  Now both work's in 1 day=5%
  which is equal to Ravan's work in 1 day.
  So ans is (d)
• 11 years agoHelpfull: Yes(4) No(0)
• ans is D option..
  hanuman is doing 2unit/day
  ravanan is doing 1unit/day
  therefore together they are doing 3unit/day
  Total work=20units
  so, they are takin 20/3 days to complete the work..But actually they are taking 20days to complete the work..So Ravanan is doing the negative work
• 11 years agoHelpfull: Yes(2) No(0)
• option d is correct.because if both work together it takes time less then 20 days
• 11 years agoHelpfull: Yes(1) No(0)
• Destructing the Bridge.
  
• 11 years agoHelpfull: Yes(1) No(1)
• h 10 2
  
  r 20 1
  
  Lcm=20 3
  
  answer is option a
• 11 years agoHelpfull: Yes(0) No(4)
• d) Destructing the bridge
• 11 years agoHelpfull: Yes(0) No(0)