2 men or 5 women or 7 boys can finish a work in 469 days, then the number of days taken by 7 men, 5 women and 2 boys to finish the work is :
Correct Answer: 98
Explanation:
2 men = 7 boys
⇒ 1 man = 7/2 days 5 women = 7 boys
⇒ 1 women = 7/5 boys 7 men + 5 women + 2 boys = 7 x 7/2 + 5 x 7/5 + 2 = 67/2 boys
Now, B1 x D1 = B2 x D2
7 X 469 = 67/2 x D2
D2 = 98 days
