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In the above correctly worked addition sum, A,B,C and D represent diff

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In the above correctly worked addition sum, A,B,C and D represent diff  [#permalink]

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New post 19 May 2016, 03:03
00:00
A
B
C
D
E

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  15% (low)

Question Stats:

86% (02:11) correct 14% (02:02) wrong based on 51 sessions

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In the above correctly worked addition sum, A,B,C and D represent different digits, and all the digits in the sum are different. What is the sum of A,B,C and D?

A. 23
B. 22
C. 18
D. 16
E. 14

Attachment:
p003-8.gif
p003-8.gif [ 321 Bytes | Viewed 3762 times ]

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Re: In the above correctly worked addition sum, A,B,C and D represent diff  [#permalink]

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New post 19 May 2016, 07:36
Bunuel wrote:
Image
In the above correctly worked addition sum, A,B,C and D represent different digits, and all the digits in the sum are different. What is the sum of A,B,C and D?

A. 23
B. 22
C. 18
D. 16
E. 14

Attachment:
p003-8.gif



The first thing that we can say for sure is that D =1.. as B+5 or B+5+1 = 10*D + 4... and B is a digit....

Now A + C = 13, as None of A or C can be 1 as D =1.. so there are no combinations of A and C that can equal just 3..

Now from tens digit 5+B+1 = 14.... so B = 14-6=8....

so \(A+B+C+D= A+C+B+D = 13+8+1=22..\)
B
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Re: In the above correctly worked addition sum, A,B,C and D represent diff  [#permalink]

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New post 19 May 2016, 08:59
2
'B' should be the answer.

Sum of two digits is giving three digits as the answer.

D must be 1

Now there could be two possibilities:-

Case 1:- A+C= 3

In this case 'B' would be 9. Hence sum off all digits will be 3+9+1= 13 (But this is not in the option)

Case 2:- A+C= 13

In this case 'B' would be 8. Hence sum of all digits would be 13+8+1= 22
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Re: In the above correctly worked addition sum, A,B,C and D represent diff  [#permalink]

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New post 19 May 2016, 09:30
Divyadisha wrote:
'B' should be the answer.

Sum of two digits is giving three digits as the answer.

D must be 1

Now there could be two possibilities:-

Case 1:- A+C= 3

In this case 'B' would be 9. Hence sum off all digits will be 3+9+1= 13 (But this is not in the option)


Case 2:- A+C= 13

In this case 'B' would be 8. Hence sum of all digits would be 13+8+1= 22


Hi,

the high lighted portion cannot be a possiblity.....
Quote:
and all the digits in the sum are different
..
this means NOT ONLY A,B,C and D are different BUT ALSO they are different from existing digits 5,4 and 3
since you have correctly found D as 1, and A + C = 3, with both A and C as different digits..
so if A+C = 3..
two possiblities are
1) A and C are 0 and 3 but we already have 3 as one of the digits..
2) A and C are 1 and 2, but again D is already 1..

so NOT a possiblity..
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1) Absolute modulus : http://gmatclub.com/forum/absolute-modulus-a-better-understanding-210849.html#p1622372
2)Combination of similar and dissimilar things : http://gmatclub.com/forum/topic215915.html
3) effects of arithmetic operations : https://gmatclub.com/forum/effects-of-arithmetic-operations-on-fractions-269413.html
4) Base while finding % increase and % decrease : https://gmatclub.com/forum/percentage-increase-decrease-what-should-be-the-denominator-287528.html


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Re: In the above correctly worked addition sum, A,B,C and D represent diff  [#permalink]

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New post 19 May 2016, 10:03
Bunuel wrote:
Image
In the above correctly worked addition sum, A,B,C and D represent different digits, and all the digits in the sum are different. What is the sum of A,B,C and D?

A. 23
B. 22
C. 18
D. 16
E. 14

Attachment:
The attachment p003-8.gif is no longer available


Ans B
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2016-05-19 22.26.27.jpg
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Re: In the above correctly worked addition sum, A,B,C and D represent diff  [#permalink]

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New post 19 May 2016, 10:52
chetan2u wrote:
Divyadisha wrote:
'B' should be the answer.

Sum of two digits is giving three digits as the answer.

D must be 1

Now there could be two possibilities:-

Case 1:- A+C= 3

In this case 'B' would be 9. Hence sum off all digits will be 3+9+1= 13 (But this is not in the option)


Case 2:- A+C= 13

In this case 'B' would be 8. Hence sum of all digits would be 13+8+1= 22


Hi,

the high lighted portion cannot be a possiblity.....
Quote:
and all the digits in the sum are different
..
this means NOT ONLY A,B,C and D are different BUT ALSO they are different from existing digits 5,4 and 3
since you have correctly found D as 1, and A + C = 3, with both A and C as different digits..
so if A+C = 3..
two possiblities are
1) A and C are 0 and 3 but we already have 3 as one of the digits..
2) A and C are 1 and 2, but again D is already 1..

so NOT a possiblity..


Thanks for pointing out chetan2u. Overlooked the possibility that A,B,C and D are different from existing digits.
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Re: In the above correctly worked addition sum, A,B,C and D represent diff  [#permalink]

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New post 19 May 2016, 14:38
D has to be 1 because we are adding two numbers that are lower than 100, so the total has to be lower than 200.

Because D = 1, we know that A + C can't be 3, because either A or C would also need to be 1 and that is not allowed, so the only other possibility is 13.

Now, (5+1) + B = 14, thus B = 8.

13 + 8 + 1 = 22.
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Re: In the above correctly worked addition sum, A,B,C and D represent diff  [#permalink]

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Re: In the above correctly worked addition sum, A,B,C and D represent diff   [#permalink] 06 Mar 2019, 16:48
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