Joanne and Betty have a combined age of 60 years. If Joanne is 18 years old, how old is Betty?
2 answers:
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Answer:
Option B.
Step-by-step explanation:
In the question the number categories on the spinner are not given.
Consider there are 5 different categories on the spinner.
A = Spinner land on "Action".
So, probability of land on "Action" is
Number of spins, n= 60 times
The expected number of land on "Action" is
Therefore, the correct option is B.