SOLUTION: (N,V,S,A,N,T,A,R,A ) DIAGRAM 1 Base the diagram,some of the card label Y are put in a box.If a card is picked at random, probability of pickeing a Y card is 0.2, calculate the Y

Algebra ->  Probability-and-statistics -> SOLUTION: (N,V,S,A,N,T,A,R,A ) DIAGRAM 1 Base the diagram,some of the card label Y are put in a box.If a card is picked at random, probability of pickeing a Y card is 0.2, calculate the Y       Log On


   

Question 369440: (N,V,S,A,N,T,A,R,A )
DIAGRAM 1
Base the diagram,some of the card label Y are put in a box.If a card is picked at random, probability of pickeing a Y card is 0.2, calculate the Y cards.
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
P%28Y%29=0.2
Let Y be the number of Y cards added to the box.
There were 9 cards to start with in the box.
P%28Y%29=Y%2F%28Y%2B9%29=2%2F10
10Y=2%28Y%2B9%29
10Y=2Y%2B18
8Y=18
Since 8 is not a factor of 18, there is no integer answer.
Y must be an integer.
Please check the problem setup.