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# Husain and Dino had an average (arithmetic mean) of \$20 each. Dino the

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Math Expert
Joined: 02 Sep 2009
Posts: 58445
Husain and Dino had an average (arithmetic mean) of \$20 each. Dino the  [#permalink]

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18 Dec 2018, 00:04
00:00

Difficulty:

25% (medium)

Question Stats:

84% (00:57) correct 16% (02:14) wrong based on 23 sessions

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Husain and Dino had an average (arithmetic mean) of \$20 each. Dino then won a cash prize, which increased the average amount of money they had to \$80. If no other changes occurred, how many dollars did Dino win?

A. 40
B. 60
C. 80
D. 100
E. 120

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Intern
Joined: 05 Oct 2018
Posts: 11
Re: Husain and Dino had an average (arithmetic mean) of \$20 each. Dino the  [#permalink]

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18 Dec 2018, 03:07
(H+D)/2 = 20
H+D = 40

(H+X+D)/2 = 80
H+X+D = 160

160-40=120

E
VP
Joined: 31 Oct 2013
Posts: 1465
Concentration: Accounting, Finance
GPA: 3.68
WE: Analyst (Accounting)
Re: Husain and Dino had an average (arithmetic mean) of \$20 each. Dino the  [#permalink]

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18 Dec 2018, 03:47
Bunuel wrote:
Husain and Dino had an average (arithmetic mean) of \$20 each. Dino then won a cash prize, which increased the average amount of money they had to \$80. If no other changes occurred, how many dollars did Dino win?

A. 40
B. 60
C. 80
D. 100
E. 120

Nice question.

Total amount Husain and Dino had before wining the cash prize = 20 *2 = 40.

After wining the cash prize AVERAGE becomes 80.

Total amount after wining cash prize = 80*2 = 160.

Value of the cash prize = 160 - 40 = 120.

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Re: Husain and Dino had an average (arithmetic mean) of \$20 each. Dino the  [#permalink]

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18 Dec 2018, 08:21
Bunuel wrote:
Husain and Dino had an average (arithmetic mean) of \$20 each. Dino then won a cash prize, which increased the average amount of money they had to \$80. If no other changes occurred, how many dollars did Dino win?

A. 40
B. 60
C. 80
D. 100
E. 120

h + d = 40

h + (d + cash) = 160

So, The value of the cash prize is 120, Answer must be (E)
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Abhishek....

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Re: Husain and Dino had an average (arithmetic mean) of \$20 each. Dino the   [#permalink] 18 Dec 2018, 08:21
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