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makvit [3.9K]
3 years ago
5

The rate of the jet stream is 100 miles per hour. Traveling with the jet​ stream, an airplane can fly 1200 miles in the same amo

unt of time as it takes to fly 1000 miles against the jet stream. What is the​ airplane's average rate in calm​ air?
Mathematics
1 answer:
irga5000 [103]3 years ago
5 0

Answer:

x = 600 mph

Step-by-step explanation:

It is given that,

Speed of the jet stream = 100 mph

It travels 1200 miles in the same amount of time as it takes to fly 1000 miles against the jet stream.

We need to find the airplane's average rate in calm​ air. Let it is equal to x mph.

As time in same in both cases. ATQ,

\dfrac{1200}{x}=\dfrac{1000}{x-100}\\\\\dfrac{12}{x}=\dfrac{10}{x-100}\\\\12x-1200=10x\\\\12x-10x=1200\\\\2x=1200\\\\x=600

So, the airplane's average rate in calm​ air is 600 mph. Hence, this is the required solution.

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The question posed by the engineer is "are residents of the city in favor of ...".

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The engineer may want to refine the question. As posed, it would include children, homeless, and/or institutionalized residents of the city as well as drivers and tax-payers. In inclusive cultural traditions, "residents of the city" may also include animals, plants, water, air, and other holders of spiritual energy.

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A population of 120,000 grows 3% per year for 15 years, how much will the population be after 15 years?
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3 years ago
The factory workers made 715 toys per day if they work five days per week how many toys well the workers make in three weeks
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vekshin1

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