let the speed be x ,so time take for journey = 336/x hourshad the speed been 6+xtime taken = 336/(6+x)since time taken is 1 hour less, 336/x - 336/(6+x) = 1336( 6+x - x)/x(x+6) = 1336*6= x^2 + 6xx^2 + 6x - 2016 = 0x = 42 and -48so, the answer is 42Please give me good ratings :)

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