Math Question: A life of a bulb is partly constant and partly inverse proportional to its average usage. When average usage is 10 hours its life is 810 hours, when average usage is 20 hours its life is 805 hours. If the life of bulb is 1000 hours what will be its average usage? A) 1 hour B) 2 hour C) 0.5 hour D) 1.5 hour
Asked By Achint On 08/07/2019 12:16
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Math 1st grade 2nd grade 3rd grade 4th grade 5th grade 6th grade 7th grade 8th grade high school pre-algebra algebra 1 algebra 2 geometry trigonometry pre-calculus calculus 1 calculus 2 college
Math 1st grade 2nd grade 3rd grade 4th grade 5th grade 6th grade 7th grade 8th grade high school pre-algebra algebra 1 algebra 2 geometry trigonometry pre-calculus calculus 1 calculus 2 college