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300 ml over 15 min is what rate of ml per hour

User Dheeraj R
by
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1 Answer

3 votes

Answer:

1200 ml per hour

Explanation:

To compute what rate is 300 ml over 15 mins as a rate of ml per hour, we do a rule of 3, using a variable x as that amount of ml we don't know yet. We should have everything in the same units, so instead of writing 1 hour we write 60 minutes:


(300~ml)/(15~min)=(x~ml)/(60~mins)

Now we solve for x:


(300~ml)/(15~min)\cdot 60~mins=x~ml


(18000~ml)/(15) =x~ml


1200~ml =x~ml

And so, now that we know the value of x, the rate we wanted to find is


(1200~ml)/(60~mins)

Which is just 1200 ml per hour.

User Dondon Jie
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7.2k points