+2498 A jar contains only red, white and blue marbles.It contains twice as many red marbles as white marbles and three times as many white marbles as blue marbles. If a marble is choosen at random, what is the probability that it is not red ?
A)\(\frac15\)
B)\(\frac25\)
C)\(\frac35\)
D)\(\frac45\)
My answer:
\(\begin{array}{rcll} 2r &=&w \\ 3w\;(or\;6r)&=&b \end{array}\)
Alltogether there is 9r marbles the probability of choosing red marble is \(\frac19\)
the probability of not choosing red is \(1-\frac19=\frac89\)
