Coal

A daily consumption of 1.6 tonnes of coal is sufficient to supply a boiler for 42 days. How long will the same supply last if only 1.2 tonnes of coal are burned per day?

Final Answer:

t =  56 d

Step-by-step explanation:

w=1.6 42=67.2 td t=1.2w=1.267.2=56 d



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