3 years ago

I dont know how to do this question

Mathematics

1 answer:

Inessa05 [86]3 years ago

6 0

9514 1404 393

Answer:

7 1/3 hours

Step-by-step explanation:

We are to assume that the total number of heater-hours required is a constant. That is, the time is inversely proportional to the number of heaters.

If the number of heaters goes up by a factor of 6/4 = 3/2, then the number of hours will go down by the inverse factor: 2/3.

With 6 heaters instead of 4, the time required is (2/3)(11 hours) = 7 1/3 hours.

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Step-by-step explanation:

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