A drawer contains 50 bolts and 150 nuts. Half of the bolts and half of the nuts are rusted. If one item is chosen at random, then what is the probability that it is rusted or a bolt.
if two items are chosen at random, what is the probability that both are rusted or both are nuts?
Answers
Answered by
4
Step-by-step explanation:
The probablity of that both are rust is 1/2 as 25 nuts and 75 bolts are rusted so the probablity will be 100/200 or 50%.
The probablity that both are nuts is 150/200 = 3/4 or 75%.
Hope it will help u^_^
Answered by
4
Answer:
62.5%
Step-by-step explanation:
no of bolts = 50
no of nuts = 150
total no of items = 50+150
= 200
probability of the item to be a bolt
= 50 / 200
probability of the items to be rusted
= 100/200
probability of both bolt and rusted items
= 25/200
probability that is bolt and rusted
= 50/200 + 100/200 -25/200
= 50+100-25/200
= 0.625
= 62.5 %
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