During fast pedalling, a person weighing 75kg burns 52.25kj/minute. It is known that a sample of 100g of cake will release 550 kcal when it is burned in a calorimetric bomb. How long would that person have to pedal to burn the energy created by eating 75g of cake?
1.15 mins 2. 35 mins 3. 40 mins 4. 43 mins 5. 33 mins
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