125 Pupil Have Food Sufficient For 18 Days

125 pupil have food sufficient for 18 days. If 25 more pupil join them, how long will the food … assumption have you made to come to…

Answers:

Pupils in the beginning = 125
More pupils joined = 25
Total pupils = 125 + 25 = 150
Food is sufficient for 125 pupils for = 18 days
Food will be sufficient for 1 pupil for = 18 x 125 days (less pupil more days)
and food will be sufficient for 150 pupils = \frac { 18 x 125 }{ 150 } days (more pupil more days)
\frac { 18 x 5 }{ 6 } 15 days