CPM Homework Help : CC1MN Problem 7-39

Robert found an old game in a closet and wanted to play it. However, a portion of the spinner shown at right could not be read. Find the missing portion of the spinner for Robert.

A spinner with 6 sections labeled as follows: 1 sixth, 1 third, 1 fourth, 1 ninth, question mark, 1 twelfth.

Hint:

Since the spinner must land on any of the portions, all of the portions must add up to $1$ because each of the portions is relative to its probability.

More Help:

Try finding the difference between $1$ and the given probability portions. Since they have different denominators, you must find a common denominator for all of them and convert them to an equivalent fraction.

Answer:

$\frac{2}{36}$ or $\frac{1}{18}$