A drawer contains two pairs of red socks, three pairs of yellow socks, and one pair of black socks. One sock is taken from the d
rawer and put back after checking its color. A second sock is then taken out. What is the probability that the first and the second are yellow?
1 answer:
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Answer: The answer is 400 blue marbles.
Step-by-step explanation: Given that there are 560 marbles in a bag, out of which 65% are red and rest are blue.
So, number of red marbles is
and number of blue marbles is
Now, if 28 red marbles are replaced by blue marbles, the the new number of red and blue marbles will be
Now, to get 65% of the marbles blue, we need to add some more blue marbles to the bag. Let 'x' number of blue marbles are added to the bag, then
Thus, 400 blue marbles need to be added to the bag.