Answer:
Option A. 1 over 5. 10 hours
Step-by-step explanation:
This question can be solved by the unitary method.
∵ Oil company fills [tex]\frac{1}{10}[/tex] of a tank in the time = [tex]\frac{1}{5}[/tex] hurs
∴ Full tank can be filled in the time = [tex]\frac{\frac{1}{5} }{\frac{1}{10} }[/tex] hours.
= [tex]\frac{1}{5}\times 10[/tex]
Therefore, the expression that can be used to determine the time that it will take to fill the tank completely will be Option A.
