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A batsman makes a score of 87 runs in the 17th match and thus increase

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Math Expert
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Joined: 02 Sep 2009
Posts: 58449
A batsman makes a score of 87 runs in the 17th match and thus increase  [#permalink]

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New post 21 Feb 2019, 00:26
00:00
A
B
C
D
E

Difficulty:

  55% (hard)

Question Stats:

43% (01:48) correct 57% (01:56) wrong based on 14 sessions

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VP
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Joined: 31 Oct 2013
Posts: 1465
Concentration: Accounting, Finance
GPA: 3.68
WE: Analyst (Accounting)
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Re: A batsman makes a score of 87 runs in the 17th match and thus increase  [#permalink]

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New post 21 Feb 2019, 02:50
1
Bunuel wrote:
A batsman makes a score of 87 runs in the 17th match and thus increases his average by 3. Find his average after 17th match

A. 35
B. 39
C. 46
D. 54
E. 55



let the average of 16 matches be x.

16x + 87 = Total of 17 matches.

on the other hand, (x+3)17 is also the total of 17 matches.


16x + 87 = ( x + 3) 17

16x + 87 = 17x + 51

x = 36.

Now we are looking for the average after 17 matches .

36 + 3 = 39.

B is the correct answer.
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Re: A batsman makes a score of 87 runs in the 17th match and thus increase  [#permalink]

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New post 21 Feb 2019, 09:17
Bunuel wrote:
A batsman makes a score of 87 runs in the 17th match and thus increases his average by 3. Find his average after 17th match

A. 35
B. 39
C. 46
D. 54
E. 55



let avg until 16th match = x
so
16x+87=17* ( x+3)
x = 36
x+3 ; 39
IMO B
GMAT Club Bot
Re: A batsman makes a score of 87 runs in the 17th match and thus increase   [#permalink] 21 Feb 2019, 09:17
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A batsman makes a score of 87 runs in the 17th match and thus increase

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