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Bismuth83
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Kunal.lost
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Thank you for bringing this to our attention. You are correct about your approach rather I was initially confused, and now I have made the necessary changes to my original post.
Kunal.lost
Hi Bismuth83,

Just wanted to point out that the OA listed here is IDs:7 and Max Cost:11 whereas, after solving it I realized it should be the other way round (IDs: 11 and Max Cost:7)

Please confirm, and thanks for the question :)

Here's is how I approached it:

Eggs cost $4 and Bread cost $7 (given)

Apples and Flour are out of the picture.

Carrots cost more than Detergent, which costs more than $2

So Detergent could either be $3 or $5 (choose numbers such that they're not taken by any other item and there is a possible number bigger than the chosen one that could be assigned to Carrots.)

Total amount spend = $14

Bread + Eggs ($7 + $4) = $11 ($3 left)

and the remaining $3 could only be assigned to Detergent.

Hence, the 3 items purchased were Bread, Eggs and Detergent. ($7 + $4 + $3 = $14)

Most expensive of the lot was Bread ($7)

And the total of their IDs would be: 2 (Bread) + 4 (Detergent) + 5 (Eggs) = 11.

Hence, 11 and 7.
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1. The problem asks us to essentially figure out what three items did the shopper buy and their costs.

2. From the first statement, Apples and Flour weren't chosen, which leaves Bread, Eggs, Carrots, and Detergent.

3. Out of the group of 4 we must exclude one. If this were Eggs then we would arrive at a contradiction because of the second statement. So, there must be Eggs or $4 in the group.

4. Now let's figure out what price combinations can give us exactly $14. This could be: 2+5+7, 3+4+7, or 3+5+6. The only combination that has 4 is 3+4+7.

5. The third statement tells us that Bread costs $7.

6. The $3 can be either Carrots or Detergent, however it is also known that 2 < Detergent < Carrots. This means that only Detergent can cost $3.

7. So, the group of 3 items will be Detergent, Eggs, and Bread. The sum of ids is 4+5+2 = 11 and the max cost is $7.

8. Our answer is: IDs - 11 and Max Cost - 7.
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Thank you for the catch! It should be fixed now.
Kunal.lost
Hi Bismuth83,

Just wanted to point out that the OA listed here is IDs:7 and Max Cost:11 whereas, after solving it I realized it should be the other way round (IDs: 11 and Max Cost:7)

Please confirm, and thanks for the question :)

Here's how I approached it:

Eggs cost $4 and Bread cost $7 (given)

Apples and Flour are out of the picture.

Carrots cost more than Detergent, which costs more than $2

So Detergent could either be $3 or $5 (choose numbers such that they're not taken by any other item and there is a possible number bigger than the chosen one that could be assigned to Carrots.)

Total amount spend = $14

Bread + Eggs ($7 + $4) = $11 ($3 left)

and the remaining $3 could only be assigned to Detergent.

Hence, the 3 items purchased were Bread, Eggs and Detergent. ($7 + $4 + $3 = $14)

Most expensive of the lot was Bread ($7)

And the total of their IDs would be: 2 (Bread) + 4 (Detergent) + 5 (Eggs) = 11.

Hence, 11 and 7.
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