On vijay's mp3 5/6 of the 4 hours of music is rock and hip-hop. how many hours of rock and hip-hop does vijay have?

Breaking down the 4hours, we get 240mins.
5/6 *240mins = 200mins
and that 200mins is equivalent to 3 hours 40 minutes.
therefore vijay have just 3:40 hours of rock and hip hop.

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