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Two pumps
The first pump fills the tank in 24 hours second pump in another 40 hours. How long will it take to fill the tank if it operates both pumps simultaneously?
Correct answer:
x =
0
h
Step-by-step explanation:
Equation is non-linear.
Calculation:
Equation is linear and have one solution:
8x-120=0
x=15
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The first pump fills the tank in 24 hours second pump in another 40 hours. How long will it take to fill the tank if it operates both pumps simultaneously?
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You need to know the following knowledge to solve this word math problem:
statistics
harmonic mean
algebra
equation
Units of physical quantities:
time
Themes, topics:
work
Grade of the word problem:
practice for 12 year olds
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