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2 years ago

In a group of 25 students at lunch, 10 prefer ketchup on their hamburger, 10 prefer mustard on

Mathematics

1 answer:

Alex2 years ago

6 0

Answer:

15/25 or 3/5 or 60%

Step-by-step explanation:

P(K or M) = P(K) + P(M) - P(K and M)

= $\frac{10}{25}$ + $\frac{10}{25}$ - $\frac{5}{25}$

= $\frac{15}{25}$

= .6 or 60%

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2 years ago

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Answer:

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2 years ago

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