760 men can eat food in 22 days. After 2 days how many man came so that they eat food in 19 days.

Answer 1

At the beginning, there are 22*760=16720 food days.
After 2 days, there are 20*760=15200 food days left.
If this should last only 19 days, it will feed 15200/19=80 persons.

You can therefore figure out how many more people came (in addition to the original 76).