A jar contains 6 red balls and 5 blue balls. Two balls are drawn at random from the hat without replacement. What is the probabi
lity that both the balls drawn are blue?
1 answer:
Answer: 2/11
Step-by-step explanation:
We are going to solve this by using a tree diagram. It makes it a lot easier. The tree diagram is attached below.
From the tree tree diagram,
Probability of picking a blue ball at the first draw is 5/11
Prbability of picking ble at the second draw, if the balls are picked without replacement is 4/10
Probability of drawing two blue balls are;
P(B,B) = 5/11 × 4/10 = 20/ 110
Divide the numerator and denominator by 10
P(B,B) = 2/11
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Answer: 8.76%
Step-by-step explanation:
The formula to find the simple interest is given by :-
, where P is the principal amount, r is rate of interest () in decimal and t is the time ( in years). (1)
Given : Justin deposited $2,000 into an account 5 years ago.
i.e. P = $2,000 , t= 5 years
He has just withdrawn $2,876. i.e. Future value = $2,876
Interest (I)=$2,876-$2,000=$876 [Subtract Principal value from Future value]
Substitute all the above values of P , t , and I in the formula (1) , we get
In percent ,
Hence, the rate of interest = 8.76%