A job is completed by 10 men in 20 days and by 20 women in 15 days. How many days will it take for 5 men and 10 women to finish that work ?
A17 1/2
B17 1/7
C17
D17 1/120
Answer:
B. 17 1/7
Read Explanation:
10 men can complete the work in 20 days = 5 men can complete the work in 40 days
20 women can complete the work in 15 days = 10 women can complete the work in 30 days. 5 men and 10 women can complete the work in
40 x 30/40+30 days = 1200/70 = 120/70 = 17 1/7 days