The population of a metropolitan city doubled every 8 years from 1975 to 1999. what was the percentage increase in population during this time?

A 200%
B 300%
C 400%
D 800%

Correct Answer: 800%

Year 1975 to year 1999 = 24 years = three periods of '8 years' So, the population became (2 x 2 x 2 = 8) times of its initial population. Therefore, the population of the city increased to 8 x 100% = 800%.
Bissoy MCQ
#গণিত #শতকরা (Percentage) #Trust Bank Ltd #Trust Bank Ltd - Assistant Officer - 30.03.2012

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