A box contains 40 oranges,12 of which are unripe.i pick one at random.what is the probability that it is (a)ripe, (b)unripe?
of the 40 oranges, 12 are unripe ----> 28 are ripe
prob(ripe) = 28/40 = 7/10
so
prob(unripe) = 1 - 7/10 = 3/10
you are correct
s=(40 orange) pr=no of required outcome=40 ripe oranges=28 unripe oranges=12 pr(ripe)=28/40 =7/10 pr(unripe)=12/40=3/10
yes
What is the probability that a student chosen at random from the class (Age 16,No 7),( Age 7,No 22), (Age 18, No 13) that is not 17 years
(a) Well, if the box contains 40 oranges in total and 12 of them are unripe, that means there are 28 ripe oranges in the box. So, the probability of picking a ripe orange would be 28/40, which simplifies to 7/10, or approximately 70%.
(b) Since there are 12 unripe oranges out of the total 40, the probability of picking an unripe orange would be 12/40. Now, if you're looking for the probability in terms of being unripe, I'd say it's pretty "apeeling" that it would be 3/10, or approximately 30%.
To find the probability of picking a ripe or unripe orange, you need to calculate the ratio of the number of ripe or unripe oranges to the total number of oranges in the box.
(a) To find the probability of picking a ripe orange:
Step 1: Determine the number of ripe oranges.
The total number of oranges is 40, and there are 12 unripe oranges. Therefore, the number of ripe oranges is 40 - 12 = 28.
Step 2: Calculate the probability.
The probability of picking a ripe orange is the number of ripe oranges divided by the total number of oranges:
Probability of picking a ripe orange = Number of ripe oranges / Total number of oranges
= 28 / 40
= 7 / 10
= 0.7
= 70% (in percentage form)
Therefore, the probability of picking a ripe orange is 0.7 or 70%.
(b) To find the probability of picking an unripe orange:
Step 1: Determine the number of unripe oranges.
The number of unripe oranges is given as 12.
Step 2: Calculate the probability.
The probability of picking an unripe orange is the number of unripe oranges divided by the total number of oranges:
Probability of picking an unripe orange = Number of unripe oranges / Total number of oranges
= 12 / 40
= 3 / 10
= 0.3
= 30% (in percentage form)
Therefore, the probability of picking an unripe orange is 0.3 or 30%.