SOLUTION: In a hostel there are 200 students food last for 50 days . After 20 days 50 Student left the hostel and how long food last for ?

Question 1011510: In a hostel there are 200 students food last for 50 days . After 20 days 50 Student left the hostel and how long food last for ?
Found 2 solutions by josgarithmetic, MathTherapy:
Answer by josgarithmetic(39616) (Show Source): You can put this solution on YOUR website!
Two hundred students CONSUME THE FOOD in 50 days; so 1 student consumes THE FOOD in . The one-student rate is . This is the key to use.

Two parts make the job of CONSUME THE FOOD.
200 students for 20 days, and then students for unknown t days.

Again, the job is CONSUME THE FOOD.

, which may mean, fifty-three days and one-third of a day.
Answer by MathTherapy(10551) (Show Source): You can put this solution on YOUR website!
In a hostel there are 200 students food last for 50 days . After 20 days 50 Student left the hostel and how long food last for ?

INVERSE variation.
After 20 days, of food is consumed by the 200 students
The remaining of food will last the remaining 150 (200 - 50) students, days
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