Heating Water with Coils

The smaller heating coil heats the water in 30 hours and the larger one in 20 hours. How long will it take to heat the water if both coils are switched on simultaneously, but the smaller coil breaks down after 8 hours?

Final Answer:

t =  14.6667 h

Step-by-step explanation:


1/30 · 8 + 1/20 · t= 1

3t = 44


t = 44/3 = 14.66666667

t = 44/3 ≈ 14.666667

Our simple equation calculator calculates it.



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