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Bunuel
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Grace's average bowling score over the past 6 games is 150. If she wan 02 Jul 2019, 03:02
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D
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5% (low)

Question Stats:

88% (01:35) correct 12% (01:49) wrong based on 65 sessions

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Grace's average bowling score over the past 6 games is 150. If she wants to raise her average score by 10%, and she has two more games remaining in the season, what must her average score on the last two games be?

A. 180
B. 190
C. 200
D. 210
E. 220
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D
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Grace's average bowling score over the past 6 games is 150. If she wan Updated on: 02 Jul 2019, 07:53
Originally posted by Kinshook on 02 Jul 2019, 03:08.
Last edited by Kinshook on 02 Jul 2019, 07:53, edited 1 time in total.
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Bunuel
Grace's average bowling score over the past 6 games is 150. If she wants to raise her average score by 10%, and she has two more games remaining in the season, what must her average score on the last two games be?

A. 180
B. 190
C. 200
D. 210
E. 220
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Average score needed = 150 * 1.1 = 165
-6*15 + x*2 = 0 (Differences w.r.t 165)
x = 45

Average score in 2 games = 165 + 45 = 210

IMO D
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Grace's average bowling score over the past 6 games is 150. If she wan 02 Jul 2019, 03:25
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Bunuel
Grace's average bowling score over the past 6 games is 150. If she wants to raise her average score by 10%, and she has two more games remaining in the season, what must her average score on the last two games be?

A. 180
B. 190
C. 200
D. 210
E. 220
Show more

Average required in 8 games = 150*110%=165; Sum of scores =165*8=1320
Sum of scores 6 games = 900
Score to be made in 2 games = 420. average is 210 IMO D
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Grace's average bowling score over the past 6 games is 150. If she wan 02 Jul 2019, 04:09
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150-------165-----x
|---------------------|
6--------------------2

\(\frac{6}{2} = \frac{x-165}{165-150}\)

\(x-165=45\)

\(x=210\)

Answer is (D)
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Grace's average bowling score over the past 6 games is 150. If she wan 02 Jul 2019, 07:51
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Bunuel
Grace's average bowling score over the past 6 games is 150. If she wants to raise her average score by 10%, and she has two more games remaining in the season, what must her average score on the last two games be?

A. 180
B. 190
C. 200
D. 210
E. 220
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total score is 150*6 ; 900 for 6 games
and 10% increase in avg ; 165 *8 ; 1320
so difference; 1320-900; 420
avg of 2 games; 210
IMO D
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Grace's average bowling score over the past 6 games is 150. If she wan 02 Jul 2019, 19:37
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Bunuel
Grace's average bowling score over the past 6 games is 150. If she wants to raise her average score by 10%, and she has two more games remaining in the season, what must her average score on the last two games be?

A. 180
B. 190
C. 200
D. 210
E. 220
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Average of 6 = 150
—> Sum of 6 = 150*6 = 900

Average of 8 = 10% more = 150 + 15 = 165
—> Sum of 8 = 165*8 = 1320
—> Sum of 2 = 1320 - 900 = 420
—> Average of 2 = 420/2 = 210

IMO Option D

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Grace's average bowling score over the past 6 games is 150. If she wan 02 Jul 2019, 21:14
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Bunuel
Grace's average bowling score over the past 6 games is 150. If she wants to raise her average score by 10%, and she has two more games remaining in the season, what must her average score on the last two games be?

A. 180
B. 190
C. 200
D. 210
E. 220
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Say, she scored 150 in each of the 6 games. She wants to increase her score by 10% i.e. by 15 and make it 165. So the two remaining games should bring in a score of 165 each and 15 extra for the previous 6 games i.e. 90 extra. So the two games should bring in 45 each extra.
The two games should come in at 165 + 45 = 210 each (average)

Answer (D)
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Grace's average bowling score over the past 6 games is 150. If she wan 06 Jul 2019, 18:00
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Bunuel
Grace's average bowling score over the past 6 games is 150. If she wants to raise her average score by 10%, and she has two more games remaining in the season, what must her average score on the last two games be?

A. 180
B. 190
C. 200
D. 210
E. 220
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Notice that sum of the past 6 games is 150 x 6 = 900. Increasing 150 by 10 percent is 150 x 1.1 = 165; thus:

165 = (900 + n)/8

1,320 = 900 + n

420 = n

So, the average of the remaining two games must be 420/2 = 210.

Answer: D
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