Sakshi can do a piece of work in 20 days. Tanya is 25% more efficient than Sakshi. The number of days taken by Tanya to do the same piece of work is:

A. 15
B. 16
C. 18
D. 25

• Sakshi can do a piece of work in 20 days. Tanya is 25% more efficient than Sakshi.
  
  The number of days taken by Tanya to do the same piece of work = 20/1.25 = 20*4/5 = 16 days
• 12 years agoHelpfull: Yes(18) No(6)
• 125/100=5:4 i.e 5:4::20:x then 20*4/5 then 16...
• 10 years agoHelpfull: Yes(2) No(1)
• S=1/20
  T=1.25*S
  =1.25*(1/20)
  =1/16
  
  Hence Answer is 16
• 9 years agoHelpfull: Yes(2) No(0)
• Time taken by Sakshi and Tanya = 125 : 100.
  Let x is number of days taken by Tanya.
  Then, 125:100 :: 20: x
  125/100 :: 20/ x
  x=16
  Therefore Tanya takes 16days to complete same work done by Sakshi.
  
• 8 years agoHelpfull: Yes(2) No(0)
• 25% more efficient= 20*(25/100)=5
  means tanya can do the same piece of work 5 days before sakshi
  thus 15 days will be taken by tanya
  
  
• 10 years agoHelpfull: Yes(1) No(6)
• ans is 16 as 25 percent is 1/4.so tanya takes 4 days less than sakshi. hence 16.option b is correct
• 9 years agoHelpfull: Yes(1) No(0)
• Sakshi's one day work=1/20
  Tanya's one day work =(1/20 + 25% of 1/20) = 1/20+1/80 = 1/16.
  
  So Tanya can complete the work in 16 days.
• 7 years agoHelpfull: Yes(1) No(1)
• 15
  20days for sakshi that is 100%
  whereas tanya is 25% more efficient it means she can complete the work less no of days compare to sakshi ,25% more efficient means 5days before so 15is answer
  
• 9 years agoHelpfull: Yes(0) No(0)
• 15 is the answer
• 9 years agoHelpfull: Yes(0) No(0)
• ans is 15.tanya will complete the work in 5 less days then sakshi according to the condition so ans is option a 15
• 9 years agoHelpfull: Yes(0) No(0)
• taniya=(125/100)sakshi
  In 1 day sakshi can do work 1/20part.
  taniya can do a work in 1 day
  taniya=(125/100)*1/20
  taniya=1/16
  taniya can complete the work in 16 days.hence (b) is the right answer.
• 9 years agoHelpfull: Yes(0) No(0)
• S=1/20
  T=1.25*S
  =1.25*(1/20)
  =1/16
  
  Hence Answer is 16
• 9 years agoHelpfull: Yes(0) No(0)
• Tanya is 25% more efficient than sakshi that means she will take 25% less time than sakshi, so 25% of 20 is 5, hence, 20 - 5 = 15.
  Another method, Sakshi: Tanya = 100: 75= 4:3. So when sakshi=20, tanya=15.
  Cross checking, 20-15=5, (5/20)100=25%.
  NOTE: There's a difference between Tanya being 25% more efficient than sakshi and sakshi being 25% more efficient then tanya, in the given case it is the former and not the later.
• 8 years agoHelpfull: Yes(0) No(1)
• 100 ------> 20
  125 ------> ?
  100x20 = 125x X
  X = 16
• 5 years agoHelpfull: Yes(0) No(0)
• s=1/20
  t=125/100=5/4
  1/20*5/4=1/16
  16days
• 5 years agoHelpfull: Yes(0) No(0)