SOLUTION: Bill cycles x km at a constant speed for half an hour. (a) Write an expression to represent i) his speed in km/min. ii) the distance covered in 12y minutes. (b) Hence find the

Algebra ->  Customizable Word Problem Solvers  -> Mixtures -> SOLUTION: Bill cycles x km at a constant speed for half an hour. (a) Write an expression to represent i) his speed in km/min. ii) the distance covered in 12y minutes. (b) Hence find the      Log On

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Question 460770: Bill cycles x km at a constant speed for half an hour.
(a) Write an expression to represent
i) his speed in km/min.
ii) the distance covered in 12y minutes.
(b) Hence find the distance covered if x=4 and y=5.

Answer by robertb(5830) About Me  (Show Source):
You can put this solution on YOUR website!
(a)
(i) %28xkm%29%2F%28%280.5hr%29%2A%2860min%2Fhr%29%29+=+x%2F30 km/min
(ii) %28x%2F30%29%2A%2812y%29+=+%282xy%29%2F5km.
(b) (2*4*5)/5 = 8 kilometers.