Multiple Choice Questions

In a camp there is a food for 400 students for 30 days but after 20 days 200 students left For how m...........

Quantitative Aptitude (CSC) Time and work

In a camp, there is a food for 400 students for 30 days but after 20 days, 200 students left. For how many more days the food will last now?

10 days

30 days

40 days

20 days

Solution:
400*30 = 400*20 + (200*x)
12000 = 8000 + 200x
Solve, x = 20 days
Total days = 20+20 = 40 days
More days = 40-30 = 10 days

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