Question

The count of a certain breed of bacteria was found to increase at the rate of 4% per hour and then decrease by 2% per hour. Find the bacteria at the end of 2 hours if the count was 2,00,000 initially.

Asked in DSSSB ASO · 2025
Population Growth · Quantitative Aptitude
Exam PYQ4 Options
Quantitative AptitudePercentagePopulation GrowthDifferent RateDSSSB ASO2025
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Quick Revision

If the population after several different rates is given, reverse the process by dividing by each multiplying factor in reverse order.

Correct AnswerCorrect option for this question
Option C — 2,03,840

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Questions Asked from Percentage in Previous Exams

See how often Percentage has appeared in previous-year questions across major government exams.

High Exam Frequency
43UPSC Questions Asked in These Years:2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2026
29SSC Questions Asked in These Years:2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026
23Railways Questions Asked in These Years:2016, 2018, 2020, 2021, 2022, 2023, 2024, 2025, 2026
42State PSC Questions Asked in These Years:2002, 2004, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025
Percentage has appeared in 137 previous-year exam questions, most frequently in UPSC, State PSC and SSC.
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