Answer:
12 × 1/3 hour
Explanation:
1/12 tank in 1/3 hour.
1/12 is one-twelfth of the tank.
there are 12 twelfths in an unit. The tank has 12 one-twelfth parts, so you need to fill 12 times 1/12 of the tank.
Since it takes 1/3 hour to fill 1/12 of the tank, it will take 12 × 1/3 ghour tio fill the entire tank.
The expression is
12 × 1/3 hour