Subject
Bank Exam
Topic
Dutch Bangla Bank Ltd, PO 2015
In one year, the population of a city increased by 20%. The next year, it decreased by 10%. What was the percentage increase in the population over the two years?
In one year, the population of a city increased by 20%. The next year, it decreased by 10%. What was the percentage increase in the population over the two years?
ক)
8খ)
10গ)
15ঘ)
None of theseExplanation
if In year 1 population is 100 in year 2, population is 120 Now, in year 3, 10% decrease means, if population was 100, it decreased by to 90 if population was 1, it decreased by to 90/100 if population was 120, it decreased by to 90*120/100 = 108 Thus, increase in population from year 1 = 108 - 100 = 8Related questions
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