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? Choose the correct choice from the following answers.
A) 12	B) 28	C) 26	D) 19	E) 112
Explanation:   Daughter’s 1 day’s work = (1/3 – 1/4) = 1/12   Daughter alone can do the work in  12/1= 
<gadget id="calculator"> 12/1</gadget>
<output>12</output>
12 days   12NSWER: 12
<result>A</result>
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?