arun is thrice efficient than satya and hence complete a given work in 60 days lesser time when compared to satya . If both of them work togeather,how many days will they complete the work
a: 27.5 days
b: 25 days
c: 22.5 days
d: 24 days

• ans:22.5
  arun thrice efficient =x/3; satya=x
  arun takes 60 days lesser so=x/3=x-60 =>x=3x-180=>x=90
  if they work together=90/4=22.5
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