Question

MATHO WORK
1) 2 pipes are required to fill a tank in 6 hours
How long will 3 pipes of the same type take
to fill the tank?
2) A hostel has food provisions of 28 days for
100 students. If 20 students leave the hostel,
then how long will the same food provisions
last?​

Answer 1

Step-by-step explanation:

1. 9 hours is the correct answer of the question.
2. First( 100 students)×(20days)= total food eaten.—(1)
4. Now there are 100+25 students.
6. So, (125 students)×(x days)= total food eaten.—(2)
8. From 1 and 2
10. (125 students)×(x days)= ( 100 students)×(20days)
12. x days = {( 100 students)×(20days)}/125 students
14. x days = (4×20)/5= 4×4= 16.
16. Hence total days = 16.