Apopulation of hyenas inhabits a tropical savanna. at the beginning of the year, there were 100 hyenas in the population. throughout the year, 20 hyenas died, 35 hyenas were born, 5 hyenas migrated into the population, and no hyenas left the population. what was the size of the population at the end of the year?

120 hyenas will be in population at the end of year.

Given data:

At the start of year:

Hence the total no. of hyenas at the end of year is 120 hyenas. Actually increase in population due to new born and migration is 35 + 5 = 40.

Due to which population become 140. But 20 of them die, making population of hyenas 120.

At the end of the year, there were  

120  

hyenas in the population.

Explanation:test