8
Q:
A) 35/4 days | B) 17.5 days |
C) 19 3/4 days | D) 37/3 days |
Answer: B) 17.5 days
Explanation:
Explanation:
Let the number of days be 'p'
As the work is same, we know that
Where M = Men, D = Days, H = Hours per day
Here M1 = 9, D1 = 15, H1 = 7
M2 = 6, D2 = p, H2 = 9
=> 9 x 15 x 7 = 6 x p x 9
=> p = 35/2 = 17.5 days.