Time and Work - Quantitative Aptitude (MCQ) questions for Q. 20758

Q.  A man can do a piece of work in 4 days, but with the help of his daughter, he can do it in 3 days. In what time can his daughter do it alone?
- Published on 07 Jul 17

a. 6 ½ days
b. 7 days
c. 9 ½ days
d. 12 days

ANSWER: 12 days
 
Daughter’s 1 day’s work = (1/3 – 1/4) = 1/12
Daughter alone can do the work in 12/1 = 12 days

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