Renu can do a piece of work in 8 days, but with the help of her friend Suma , she can do it in 4 days. In what time Suma can do it alone?	Select the correct option: A) 8 B) 12 C) 14 D) 15 E) 17
Renuâ€™s one dayâ€™s work = 1/8   Sumaâ€™s one dayâ€™s work = 1/4 - 1/8 = 1/8   Suma can do it alone in 8 days.   8NSWER:8
<result>A</result>
Renu can do a piece of work in 8 days, but with the help of her friend Suma , she can do it in 4 days. In what time Suma can do it alone?