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| The doctor took the temperature of a dead body at 11:30 PM which was 94.6 degree Fahrenheit. He took the temperature of the body again after one hour which was 93.4 degree Fahrenheit. If the temperature of the room was 70 degree Fahrenheit, estimate the time of death. Taking normal temperature of Human Body as 98.6 degree Fahrenheit. |
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| The population of a city increases at a rate proportional to the number of its inhabitants present at any time t. If the population of the city was 200000 in 1990 and 250000 in 2000. What will be the population of the city in 2020? |
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| Suppose the growth of a population is proportional to the number present. If the population of a colony doubles in 50 years, in how many years the population will become triple. |
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| In a culture, the bacteria count is 100000. The number is increased by 10% in 2 hours. In how many hours the count reach 200000 if the rate of growth of bacteria is proportional to the number present? |
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| Population grows at the rate of 6% per year. How long does it take for the population to double? |
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