Total number of students: 72
Number of days food is enough: 51
Number of students who left the hostel: 18
Remaining students: 72 - 18 = 54
Food enough for them,
Students Number of days
72 51
54 x
This equation shows the indirect proportion.
(72×51)/ 54 = 68 days
Therefore food is enough for 68 days.
What is a proportion?
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