8 men or 10 women can finish a work in 50 days. How many days will 28 men and 15 women take to finish the job ?
A8
B10
C7
D9
Answer:
B. 10
Read Explanation:
8 men = 10 women
ie, 5 women = 4 men
28 men + 15 women = 28 men + 12men = 40 men
8 men can do a piece of work in 50 days
1 men can do the same work in (50 × 8) days
Then 40 men can do the same work in (50 × 8)/40 = 10 days