Answer:
16) option E
17) option D
Explanation:
Question 16)
The inches (in) from the first term will be canceled out by the denominator of the second term. The feet (ft) in the numerator of the second term will be canceled out by the denominator of the third term. The yards (yd) in the numerator of the third term will be canceled out by the denominator of the fourth term. This leave us with only miles as a unit left. Therefore option E is the answer.
Question 17)
To convert feet (ft) to meters, we first need a conversion factor of inch (in) per foot. Then we need a conversion factor of centimeters (cm) per inch. Then we need a conversion factor of meters per centimeter. Meter needs to be in the numerator to matches the desired product.
We can now eliminated any options that do not meet these parameters. This includes Options A, B, C, and E.
Let's continue to confirm option D as the answer. To convert seconds (sec) to hours, we need to find how many seconds are in a minute (min) and how many minutes are in an hour. These parameters atop those to convert feet to meters are required with a single answer. Option D satisfies these requirements, therefore it is the answer.