the population of a town increases 8% annually if its present population is 142560 what was it a year ago
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let the population be X
X +8/100 ×x = 142560
X= 142560 ×100 /108
X= 132000
X +8/100 ×x = 142560
X= 142560 ×100 /108
X= 132000
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Solution :-
Given present population =142560
Increase in population annually =8%
Present population = x(100+increase in population) /100
where x is population last year
∴142560= x(100+8) /100
x=132000
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