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# The maximum temperatures, in degrees Fahrenheit, recorded in a city on

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Senior Manager
Joined: 13 Oct 2016
Posts: 288
GMAT 1: 600 Q44 V28
The maximum temperatures, in degrees Fahrenheit, recorded in a city on  [#permalink]

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27 Oct 2017, 09:11
00:00

Difficulty:

5% (low)

Question Stats:

92% (01:39) correct 8% (00:00) wrong based on 32 sessions

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The maximum temperatures, in degrees Fahrenheit, recorded in a city on 5 consecutive days were x + 3, 95, 87, x + 7, and x. If the average (arithmetic mean) of these temperatures was 90 degrees Fahrenheit, what is the value of x ?

A. 85
B. 86
C. 87
D. 88
E. 89

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Re: The maximum temperatures, in degrees Fahrenheit, recorded in a city on  [#permalink]

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27 Oct 2017, 09:28
1
(x + 3 + 95+ 87+ x + 7 + x) /5 =90

( 3x + 192) /5 =90
3x = 450-192
3x = 258
x = 86 - - - - > B

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Joined: 28 May 2014
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GMAT 1: 730 Q49 V41
Re: The maximum temperatures, in degrees Fahrenheit, recorded in a city on  [#permalink]

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27 Oct 2017, 09:39
1
The average of the temperatures was 90 degrees

Hence,
(x + 3 + 95+ 87+ x + 7 + x) /5 =90
=>( 3x + 192) /5 =90
=>3x = 258 => x = 86.

Ans: B.
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Joined: 24 Nov 2016
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Re: The maximum temperatures, in degrees Fahrenheit, recorded in a city on  [#permalink]

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27 Oct 2017, 10:25
1
M = Sum(Day1:DayN) / N

90 = (x +3) + (95) + (87) + (x+7) + x / 5

3 x = 450 - 182
x = 86
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Re: The maximum temperatures, in degrees Fahrenheit, recorded in a city on  [#permalink]

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30 Oct 2017, 14:01
Kritesh wrote:
The maximum temperatures, in degrees Fahrenheit, recorded in a city on 5 consecutive days were x + 3, 95, 87, x + 7, and x. If the average (arithmetic mean) of these temperatures was 90 degrees Fahrenheit, what is the value of x ?

A. 85
B. 86
C. 87
D. 88
E. 89

We can determine x with the following equation:

(x + 3 + 95 + 87 + x + 7 + x)/5 = 90

3x + 192 = 450

3x = 258

x = 86

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Re: The maximum temperatures, in degrees Fahrenheit, recorded in a city on &nbs [#permalink] 30 Oct 2017, 14:01
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