An oil company fills 1/12 of a tank in 1/3 hour. At this rate, which expression can be used to determine how long will it take for the tank to fill completely? a. 1/12 x 3 hoursb. 1/3 x 12 hoursc. 1/3 x 1/12 hourd. 3 x 12 hours
Accepted Solution
A:
Selection B is appropriate.
_____ It takes 12 times as long to fill the whole tank as it does to fill 1/12 of the tank. .. 12 * (1/3 hour) = (1/3)*12 hour