Your family goes out for dinner on Sunday night. If the total bill came out to $175 but your parents had a 20% off coupon. How m
1 answer:
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Answer: The answer is 80%.
Step-by-step explanation: Let us define the following events.
B = the event that the shirt is blue,
G = the event that the shirt is green
and
S = the event that the shirt is striped.
So, n(B) = 8, n(G) = 7, n(B and S) = 5, n(G and S) = 4.
n(S) = 5 + 4 = 9.
We have
Therefore, the required probability is
Thus, the answer is 80%.