Question

population of a city reduced by 10% due the flood . if its present population is 1422000 . what was the population a year ago

Answer 1

Let population previous year be x
Present population = population previous year - 10% of population previous year
1422000 = x - 10% of x
1422000 = x - x/10
1422000 = 9x/10
1422000×10/9 = x
x = 1580000
Therefore, population previous year was 1580000

Answer 2

Answer:

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Step-by-step explanation:

Let the population of a city a year ago be X.

Present population = previous population - 10% of previous population.

then, 14,22,000 = x - 10% of x

14,22,000 = x-1/10x

14,22,000 = 9x/10

14,22,000 × 10/9 = x

15,80,000 = x

th population of a city a year ago = 15,80,000