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Darina [25.2K]
3 years ago
9

In 2/3 of a hour, workers had installed 2/5 of a foor. At the rate,what fraction of the flooring is finished after 1 hour?

Mathematics
1 answer:
padilas [110]3 years ago
4 0
3/5 or 60%.

2/3 hour is 40 minutes, so 1/3 is 20 minutes.

40 minutes have passed and 2/5 of the progress on the floor is complete. In 20 minutes, 1/5 of the work is complete. Add 20 minutes to 40 minutes to get 60 minutes, or an hour.
Because of this, we need to add the progress of 20 minutes and 40 minutes. 1/5+2/5=3/5.
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The notation __1____ reads the probability of Event B given that Event A has occurred. If Events A and B are independent, then t
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P(B|A) (option B)

Doesn't affect (option A)

P(B|A) = P(B) (option A)

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1) Conditional probabilities could be in the form P(A|B) or P(B|A)

P(B|A) is a notation that reads the probability of event B given that event A has occurred.

P(B|A) (option B)

2) Independent events do not affect the outcome of each other

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Doesn't affect (option A)

3) Events A and B are independent if the following are satisfied:

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P(B|A) = P(B)

The ones that appeared in the option is P(B|A) = P(B) (option A)

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