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Question

Karan solves a question in 15 seconds. One of his friends challenges him that he can complete the work in one fourth of the time that Karan takes. What is the maximum time taken by Karan's friend to complete the work? [1 MARK]


Solution

Concept: 0.5 Mark
Application of the concept: 0.5 Mark

Time taken by karan = 15 seconds

Time taken by karan's friend = (1/4) of karan's time

                                                     =(15)(1/4)

                                                        =3.75 seconds

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