The population of a town 3 years ago was Rs. 50,000.If the population in these three years has increased at the rate of 10%,15% and 8% respectively, find the present population.
A
Rs. 68,210
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B
Rs. 68,310
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C
Rs. 68,410
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D
Rs. 68,510
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Solution
The correct option is B Rs. 68,310 Let P=.50,000 and
R1=10%,R2=15%,R3=8%.
Present population = P×(1+R1100)(1+R2100)(1+R3100) On substituiting the given values,
Present population =50000×(1+10100)×(1+15100)×(1+8100)