In a fort there was sufficient food for 200 soldiers for 31 day. Afte...
Man x Day = Man. Day
200 x 31 = 6200
After 27 days
200 x 27 = 5400 Man. Day is finished Remaining = 800
Man Day = 800
80 Day = 800
Day = 10
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In a fort there was sufficient food for 200 soldiers for 31 day. Afte...
Given:
- Sufficient food for 200 soldiers for 31 days
- 120 soldiers left after 27 days
To find:
- Extra days for remaining soldiers
Solution:
Let the total amount of food be F.
As per the given question,
Food consumed by 200 soldiers in 27 days = F
Food consumed by 1 soldier in 27 days = F/200
Food consumed by 1 soldier in 1 day = F/200*27
Food consumed by 1 soldier in 31 days = F/200*27*31
Now, after 27 days, 120 soldiers left the fort.
So, the remaining soldiers = 200 - 120 = 80
Now, the remaining food is sufficient for only 200*4 = 800 soldier-days.
Let the extra days for remaining soldiers be x.
Food consumed by 80 soldiers in x days = F/200*27*x
Total food consumed by 200 soldiers in 27+x days = F - F/200*27*4 + F/200*27*x
As per the given question, this food is sufficient for 80 soldiers for x days.
So, F - F/200*27*4 + F/200*27*x = F/200*27*x*80
Solving this equation, we get x = 10.
Therefore, the extra days for remaining soldiers is 10.
Hence, option (B) is the correct answer.