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CAT 2024 - Slot 1 Dilr Question 8

This is a detailed step-by-step solution for CAT 2024 - Slot 1 Dilr Question 8. Understand the concept, common mistakes, and expert tips to solve similar questions in CAT exam.

CAT 2024 Slot 1 - DILR

We can note down the data from the chart into the form of a table, that gives us,

We are told that D receives more stars than C from Y. Considering Y has already given 25 stars, it will give 0 stars to C and 5 stars to D.
The only two surfers who have not given any stars to A or B is O and X, and these are the two surfers to give all of their stars to a single blogger.
We are also told that M gives different stars to the four bloggers,
Since he has already given 0 and 10, the remaining distinct stars should add up to 20. The only numbers that are remaining that add up to 20 are 5 and 15.
We know that X rewards one of C or D 30 stars and O rewards one of C or D 30 stars.
Given that, M could not have rewarded D 15 stars, since Y rewarded D 5 stars, and D is also going to rewarded 30 stars by O or X, and since the total is same for all, which is 45. This is not possible.
This means that, M rewarded C 15 stars and D 5 stars.
This gives us two cases,
Case-1

Case-2

We can use these two cases to answer the question,
D was rewarded 45 stars in total.

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