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A mother is 3 times faster than her daughter. If the daughter completes a piece of work in 15 days, how long will it take for both mother and daughter to complete the same work?
  • a)
    13/4 days
  • b)
    15/4 days
  • c)
    17/4 days
  • d)
    19/4 days
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
A mother is 3 times faster than her daughter. If the daughter complet...
Daughter’s one-day work = 1/15
Mother’s one-day work = 1/5
Both can complete their work = 1/5+1/15 = (3+1)/15 = 4/15
Hence, required days= 15/4 days .
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A mother is 3 times faster than her daughter. If the daughter completes a piece of work in 15 days, how long will it take for both mother and daughter to complete the same work?a)13/4 daysb)15/4 daysc)17/4 daysd)19/4 daysCorrect answer is option 'B'. Can you explain this answer?
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