This question wants you to reverse the operations that occurred.
Start with 12 stamps.
Divide this number by 3/4. This represents Carla giving 1/4 of the stamps to Thomas.
Multiply this number by 2. This represents Jim giving half of the stamps to Carla.
Multiply this number by 2. This represents John giving half of his stamps to Jim.
John started out with
64 stamps.
Answer:
her monthly salary is 6,200 dollars
25% of the monthly salary is 1,550 dollars
30% of the monthly salary is 1,860 dollars
Step-by-step explanation:
(1,550)(4)=6200
(0.25)(6200)=1,550
(0.30)(6,200)=1,860
Answer:
1) The probability that the second apple is red is 0.7143 (71.43%).
2) The probability that at least one red apple is picked 0.9341 (93.41%).
Step-by-step explanation:
We can make a probability tree as the attached picture.
1) There are 2 ways in the probability tree when the second apple is red:
Both apples are red:
P(R∩R)==0.4945
Only the second apple is red:
P(Y∩R)==0.2198
The probability that the second apple is red is the sum of the previous probabilities.
P(2nd R)=P(R∩R)+P(Y∩R)=0.4945+0.2198=0.7143
2) To find the probability that at least one apple is red, we can get the probability of none of the apples is red and then it will be subtracted from 1.
The way in the probability tree is Y∩Y:
P(Y∩Y)==0.0659
P(at least 1 R)= 1-P(Y∩Y)=1-0.0659=0.9341
This Equation is true because both sides are equal