Renu can do a piece of work in 6 days, but with the help of her friend Suma , she can do it in 3 days. In what time Suma can do it alone?
Choose the correct option.
A) 6 B) 12 C) 14 D) 15 E) 17
Renuâ€™s one dayâ€™s work = 1/6   Sumaâ€™s one dayâ€™s work = 1/3 - 1/6 = 1/6   Suma can do it alone in 6 days.   6NSWER:6
<result>A</result>
Renu can do a piece of work in 6 days, but with the help of her friend Suma , she can do it in 3 days. In what time Suma can do it alone?