Q.25. The population of a city increases
5% per annum. If in 2016, its population is
89.250 what was its population in 2015.
2015
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1
Answer:
Total rate of increase in population per annum = 10%
Initially, let the population be 1000
population after 3 yr = 1000(1 + 10/100)3
= (1000 x 11/10 x 11/10 x 11/10) = 1331
∴ Increase in percentage = [(1331 - 1000)/1000] x 100%
= (331/1000) x 100%
= 33.1%
Step-by-step explanation:
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