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# Bob’s average for three tests was 83. If he scored 72 and 94 on the fi

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Math Expert
Joined: 02 Sep 2009
Posts: 58335
Bob’s average for three tests was 83. If he scored 72 and 94 on the fi  [#permalink]

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21 Jan 2019, 01:01
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Difficulty:

15% (low)

Question Stats:

88% (00:43) correct 12% (00:30) wrong based on 20 sessions

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Bob’s average for three tests was 83. If he scored 72 and 94 on the first two tests, what was his score on the third test?

A 81
B 82
C 83
D 84
E 85

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Re: Bob’s average for three tests was 83. If he scored 72 and 94 on the fi  [#permalink]

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21 Jan 2019, 01:20
$$\frac{72+94+x}{3}$$ = 83

249 = 166+x
x = 83

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Re: Bob’s average for three tests was 83. If he scored 72 and 94 on the fi  [#permalink]

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21 Jan 2019, 01:32
(72+94+x)/3= 83
166+x = 249
=> x= 83 (C)
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Re: Bob’s average for three tests was 83. If he scored 72 and 94 on the fi  [#permalink]

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21 Jan 2019, 08:15
Bunuel wrote:
Bob’s average for three tests was 83. If he scored 72 and 94 on the first two tests, what was his score on the third test?

A 81
B 82
C 83
D 84
E 85

x= 83*3 = 249
249-72-94 = third test score = 83
IMO C
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Re: Bob’s average for three tests was 83. If he scored 72 and 94 on the fi   [#permalink] 21 Jan 2019, 08:15
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