Question:
100 persons had food provision for 24 days. If 20 persons left the place, the provision will last for
(a) 30 days
(b) 96/5 days
(c) 120 days
(d) 40 days
Solution:
(a) 30 days
Explanation: 100 persons have food provision for = 24 days
1 person will have food provision for = 24×100 = 2500 days
If 20 persons left the place, then total left = 100-20 = 80 persons
Hence, 80 persons have food provision for = 2400/80 = 30 days