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The population of a town increases 15% every year. If the present population is 20700, find the populationa year ago |
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Answer» Answer: the population a year before was 18000. Step-by-step explanation: rate of increase in population (R) = 15% time= 1 yrs. since, the population given is of PRESENT (A)= 20700 population a year AGO (P)= ? we know, A = P (1+r/100)^{n} 20700 = P [(1 + 15/100)^{1}] 20700 =P (1+ 3/20) 20700 = p {(20+3)/20} P = 20700 (20/ 23) P = 20700*20/23 P = 900*20 P = 18000 (ans) solved. Step-by-step explanation: |
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