8 men can do a piece of work in 12 days. 4 women can do it in 48 days and 10 children can do it in 24 days. In how many days can 10 men, 4 women and 30 children together complete the piece of work?	Select
A) 5 days	B) 15 days	C) 28 days	D) 4 days	E) 7 days
Explanation:   1 man’s 1 day’s work = 1/8 × 12 = 1/96   10 men’s 1 day’s work = 1 × 10/96 = 5/48   1 woman’s 1 day’s work = 1/192   4 women’s 1 day’s work = 1/192 × 4 = 1/48   1 child’s 1 day’s work = 1/240   30 children’s 1 day’s work = 1/8   Therefore, (10 men + 4 women + 30 children)’s 1 day’s work = 5/48 + 1/48 + 1/8   =1/4   The required No. of days = 4 days   Answer: Option 4 days
<result>D</result>
8 men can do a piece of work in 12 days. 4 women can do it in 48 days and 10 children can do it in 24 days. In how many days can 10 men, 4 women and 30 children together complete the piece of work?