Question

the populactio of a town increas by 10% annually if the present populactio is 22000 find its populaction a year ago

Answer 1

let previous population be 100.
Increase = 10% of 100
= 10/100×100
= 10.
population after increment = 100+10
= 110.

If present population is 110, previous population = 100
If present population is 1, previous population = 100/110
If present population is 22000, previous population
= 100/110 × 22000
= 20000.

Hence, population a year ago = 20000.


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