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Terry and Bruno took part in a marathon. In 50 minutes, Terry had completed only `5/8` of the marathon but Bruno had already completed the marathon.

Bruno's average speed for the marathon was 33 m/min faster than Terry.

(a) What is Bruno's average speed for the marathon?

(b) What is the distance of the marathon ? (Give your answer in km.)

Notes to student:

If the question above has parts(e.g. (a) and (b)), given that the answer for part (a) is 10 and the answer for part (b) is 12, give your answer as:10,12