The fourth one should be the correct answer
It would take 630 seconds to boil the water.
Your equation is correct.

Answer:
it is option A
Step-by-step explanation:
The value of the expression 8 / m - 11 / 3m is 13 / 3m
<h3 /><h3>How to simplify an expression?</h3>
8 / m - 11 / 3m
Therefore,
8 / m - 11 / 3m
The factor of the denominator is 3m
Therefore,
8 / m - 11 / 3m = 3(8) - 11/ 3m
3(8) - 11/ 3m = 24 - 11 / 3m
24 - 11 / 3m = 13 / 3m
learn more on fraction here: brainly.com/question/24161414
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