Question

An oil company fills 1 over 10 of a tank in 1 over 5 hour. At this rate, which expression can be used to determine how long it will take for the tank to fill completely?
A. 1 over 5 ⋅ 10 hours
B. 1 over 10 ⋅ 5 hours
C. 1 over 5 ⋅ 1 over 10 hour
D. 5 ⋅ 10 hours

Answer 1

Hey there, Natethegreat13!

The correct answer should be A
If it takes $\frac{1}{5}$ hours (which is 24 minutes) to fill one tenth of the tank, then to fill 10 tanks, it would be $\frac{1}{5}$ * 10 and you get a total of 2 hours to fill the tank.

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Answer 2

If 1/10 of the tank is filled in 1/5 of an hour, then multiplying both of those by 5 you would get 5/10 of a tank being filled in a full hour, or answer choice A. Hope this helps! By the way, sorry for the incorrect answer a couple years ago :)