If in a certain population,

[ektamatta]

If in a certain population, people are born at an average rate of 9 people every 2 seconds and people die at an average rate of 3 people every 2 seconds, by approximately how many people does the population increase in 1 day?

a.17,280
b.25,920
c.129,600
d.259,200
e.388,800

OA is D

please explain

[getneonow]

birth per sec = 9/2

death per sec = 3/2

increase per sec = 9/2 - 3/2 = 3

so in one day increase = 3 * 24* 3600 = 259200

[aatech]

so in one day increase = 3 * 24* 3600 = 388800

3 * 24* 3600 = 259200

[ektamatta]

How did u get 3600?

[beeparoo]

How did u get 3600?

There are 3600 sec in an hour.

Or, in longer form, (60 sec/min)(60 min/hr) = 3600 sec/hr