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Motorbike A travels at 10km/h faster than motorbike B whose speed is x km/h. Motorbike A takes #1 1/2# hours less than motorbike B to cover a 180 km journey. (a) Write an expression in terms of x for the time taken to cover the 180km journey by: (i) Motorbike A; (ii) (ii) Motorbike B.
(b) Use the expression in (a) above to determine the speed, in km/h, of motorbike A. (c) For a journey of 48km