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If △ and □ represent single digits in the correctly worked computation

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If △ and □ represent single digits in the correctly worked computation  [#permalink]

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New post 08 Oct 2018, 03:04
00:00
A
B
C
D
E

Difficulty:

  25% (medium)

Question Stats:

74% (00:51) correct 26% (01:00) wrong based on 79 sessions

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If △ and □ represent single digits in the correctly worked computation above, what is the value of △ + □ ?


A. 7

B. 9

C. 10

D. 11

E. 13

Spoiler: ::
Attachment:
2018-10-08_1502.png
2018-10-08_1502.png [ 111.45 KiB | Viewed 706 times ]
Spoiler: OA

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Re: If △ and □ represent single digits in the correctly worked computation  [#permalink]

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New post 08 Oct 2018, 03:18
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Bunuel wrote:
Image
If △ and □ represent single digits in the correctly worked computation above, what is the value of △ + □ ?


A. 7

B. 9

C. 10

D. 11

E. 13

Spoiler: ::
Attachment:
2018-10-08_1502.png



Let the square represent x

1 + x + 2 + 6 = 12

x + 9 = 12
x = 3



Let the triangle represent y

y + 4 + 1 + 1 = 12
y + 6 = 12

y = 6

x + y = 6 + 3 = 9

Answer choice B.

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Re: If △ and □ represent single digits in the correctly worked computation  [#permalink]

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New post 08 Oct 2018, 03:18
It should be answer option B , is it ?
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Re: If △ and □ represent single digits in the correctly worked computation  [#permalink]

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New post 08 Oct 2018, 03:20
Arpitkumar

Yes did you try solving it? How do you arrive to it?

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Re: If △ and □ represent single digits in the correctly worked computation  [#permalink]

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New post 08 Oct 2018, 03:21
Bunuel wrote:
Image
If △ and □ represent single digits in the correctly worked computation above, what is the value of △ + □ ?


A. 7

B. 9

C. 10

D. 11

E. 13

Spoiler: ::
Attachment:
2018-10-08_1502.png


2+6+carry forward + □ = 12
□ = 3 (carry forward = 1)
4+1+carry forward + △ = 12
△ = 6 (carry forward = 1)
△ + □ = 9
B
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Re: If △ and □ represent single digits in the correctly worked computation   [#permalink] 08 Oct 2018, 03:21
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