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# Janet’s average for four tests was 75. If she scored 63 and 83 on the

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Math Expert
Joined: 02 Sep 2009
Posts: 53066
Janet’s average for four tests was 75. If she scored 63 and 83 on the  [#permalink]

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21 Jan 2019, 00:00
00:00

Difficulty:

25% (medium)

Question Stats:

85% (01:16) correct 15% (01:56) wrong based on 16 sessions

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Janet’s average for four tests was 75. If she scored 63 and 83 on the first two tests, what was her average for the last two tests?

A 73
B 75
C 77
D 79
E 81

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Director
Joined: 18 Jul 2018
Posts: 679
Location: India
Concentration: Finance, Marketing
WE: Engineering (Energy and Utilities)
Re: Janet’s average for four tests was 75. If she scored 63 and 83 on the  [#permalink]

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21 Jan 2019, 01:48
Total marks = 75*4 = 300
Marks in last two tests = 300-63-83 = 154/2 = 77

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Re: Janet’s average for four tests was 75. If she scored 63 and 83 on the  [#permalink]

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21 Jan 2019, 07:13
Bunuel wrote:
Janet’s average for four tests was 75. If she scored 63 and 83 on the first two tests, what was her average for the last two tests?

A 73
B 75
C 77
D 79
E 81

total = 75*4 = 300
63+83= 146
difference = sum of score on last two subjects ; 300-146 = 154
154/2 = 77 IMO C
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Re: Janet’s average for four tests was 75. If she scored 63 and 83 on the   [#permalink] 21 Jan 2019, 07:13
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