Question

in a hostel 150 students have food enough for 90 days how many students must be added so that the food is enough for 75 days?

Answer 1

Answer:

students, for 45 days supply = Total units is 6,750.

150 students for 10 days = 1,500 units used, therefore food balance is now reduced down to 5,250 units

5,250 units divided by 125 students (after 25 leave) = 42

Answer: Food supply will last for 42 days based on 125 students

Lets say a ration is what one student eats in a day.

To start we have 150 * 45 = 6750 rations.

During 10 days 150 students use 1500 rations, so 5250 rations are left.

Now the remaining rations are shared by only 125 students, so the food lasts for 5250 / 125 = 42 days.

The food will last for 52 days, or 7 extra days.

Answer 2

Answer:30

Step-by-step explanation

150 students have enough food for 90 days

1 student has enough food for 150*90days

150*90/75 students have enough food for 75 days

=180 students

thus 180-150=30 students must be added so that food is enough for only 75 days