Question

in a hostel of 50 children the output provision for 40 days if 30 more children join the hostel how long will this provision last

Answer 1

50 x 40 = 80 x a
2000=80a
a=2000/80
a=25 days

Answer 2

Answer:

x=25

0 : 80

= x : 40

⇒ 50 :80 = x 40

⇒

50 ×40 =  80 ×  x

⇒ x = 50 × 40 80

⇒ x= 25

∴  The provisions were last for = 25 day