In a hostel of 50 girls there are food provisions for 40 days. If 30 more girls join the hostel, the food provisions will last for:
50 girls can eat for 40 days
1 girl can eat for 50 * 40 = 2000 days
If 30 more girls join, number of girls = 50 + 30 = 80
No. of days the food will last = 2000/80 = 25 days
Hence, option C is the correct answer.
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