Question

In a hostel of 50 students there is food for 40 days.If 30 more students join the hostel then how long will the food last?

Answer 1

Answer:

In a hostel of 40 girls, there is a food provision for 30 days. If 20 more girls join the hostel, how long will the provision of food last?

It is clear that if more girls join the hostel the food will last for less number of days. So it is a case of inverse variation.

Writing the given values in a table, we have

Number of girls

40

60

Number of days

30

x

Now in case of inverse variation, the product of quantities will remain same. Therefore

Hence, the food will last for 20 days.

Step-by-step explanation:

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Answer 2

Answer:

THE FOOD WILL LAST FOR 25 DAYS.

Step-by-step explanation:

Students = 50

Food (days) = 40

Student if 30 more join = 50+30 = 80

Food = ?

Food = 50*40/80 = 2000/80 = 25