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On his trip to the airport, Grant drove a total of 9 miles.

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On his trip to the airport, Grant drove a total of 9 miles. [#permalink] New post 18 Dec 2017, 12:39
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On his trip to the airport, Grant drove a total of 9 miles. His average speed on the trip was x miles per hour, where 30 ≤ x ≤35. Which of the following could be the total number of minutes that Grant took to make the trip?

Indicate \(all\) such numbers of minutes.

A. 15
B. 16
C. 17
D. 18
E. 19
[Reveal] Spoiler: OA

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Re: On his trip to the airport, Grant drove a total of 9 miles. [#permalink] New post 20 Dec 2017, 02:33
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Carcass wrote:
On his trip to the airport, Grant drove a total of 9 miles. His average speed on the trip was x miles per hour, where 30 ≤ x ≤35. Which of the following could be the total number of minutes that Grant took to make the trip?

Indicate \(all\) such numbers of minutes.

A. 15
B. 16
C. 17
D. 18
E. 19

[Reveal] Spoiler: OA
B,C,D



Here for speed =30 miles/hr and distance = 9miles

Then time in minutes = 9/30 * 60 =18 minutes

for speed =35 miles/hr and distance = 9miles

Then time in minutes = 9/35 * 60 =15.4 minutes

Therefore time will be in the range from = 15.4 ≤ Time in minutes ≤ 18

Hence Option are B,C,D
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Re: On his trip to the airport, Grant drove a total of 9 miles.   [#permalink] 20 Dec 2017, 02:33
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On his trip to the airport, Grant drove a total of 9 miles.

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