In a certain country a person is born every 7 seconds and a person dies every 13 seconds. Therefore, the birth and death rates account of a population growth rate of one person every-0
Created: 6 years ago |
Updated: 3 years ago
best des
Hints: Let x be the number of seconds for the birth of new person.
Birth rate - Death rate = Population growth
1 person / 7 seconds - 1 person / 13 seconds = 1 person / x seconds
বা, 6 person /91 seconds = 1 person / x second
x = 91 / 6 = 15.17 seconds
Md Azizur Rahman
Founder of Satt
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