The hostel of a college having 320 students has a stock of food for 80 days. If 20 students leave the hostel after 20 days, for how many more days will the food last? Someone please help, this is to do with ratio and proportion:)
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Answer:
x/y is equal to students/days.
Therefore,320students/60 days is equal to 300 students / y days.
It is indirect variation.
320× 60= 300y
you = 320/300×60 =64 days.
Hence the food will last more 4 days
320*80=25600
Therefore,Number of students 320-20=300
Food will last for (80-60)=60days for 320 students
So,320*20/300=64 days
So the food will last for 64 days.
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