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30 Nov 2022, 12:46
Kudos
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E
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
25%
(medium)
Question Stats:
78% (01:23) correct
22%
(01:35)
wrong
based on 583
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After 5 games, a rugby team had an average of 28 points per game. In order to increase the average by n points, how many points must be scored in a 6th game?
(A) n
(B) 6n
(C) 28n
(D) 28 + n
(E) 28 + 6n
(A) n
(B) 6n
(C) 28n
(D) 28 + n
(E) 28 + 6n
30 Nov 2022, 13:23
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Bunuel
Let's say the team scored 28 points on the 6th game as well, the mean will not change. However we need the mean (average) to increase by n points.
Including the 6th, the team has played 6 games. If the mean needs to be increased by n points, then the team should have 6n extra points in addition to the existing mean i.e. 28.
Hence the team must score 28 + 6n points.
Option E
30 Nov 2022, 13:27
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For 5 games sum is 5*28 = 140
We need to increase average by n
140 + x / 6 = 28 + n
OA : E
Posted from my mobile device
We need to increase average by n
140 + x / 6 = 28 + n
OA : E
Posted from my mobile device
