Question
Rufus has a total of 20 coins of 2 types, Type Q and Type R. The value of each Type of Q coin is 5q currency units (cu), and the value of each Type R coin is 5r cu, where q and r are positive integers and q < r ……
Solution : Rufus has a total of 20 coins of 2 types …
Watch the video solution to see “owning the dataset” approach come to life on this question.
Question Attributes
- Source: Official Mocks
- Difficulty Level: Hard – 40% accuracy
- Question Type: Two-Part Analysis – Quant
- Category: Math
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Summary – Rufus has a total of 20 coins of 2 types …
To master DI questions, apply the “owning the dataset” approach that entails the following three steps:
- Thoroughly understand the dataset by actively translating, drawing inferences, and visualizing information.
- Determine the approach to solve the question asked.
- Execute the approach.
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