Probability

Question

A jar contains only red, green, and blue marbles. It is three times as likely that you randomly pick a red marble as a green marble, and five times as likely that you pick a green one as a bluenose. Which could be the number of marbles in the jar?

Answer 1

Let x = number of blue marbles

 

then 5x = number of green marbles

 

then 3 (5x) = 15x = number of red marbles

 

Any multiples of x, 5x, and 15x would work

for the number of marbles in the jar!

 

You need to know more information in order 

to state exactly how many of each you would

have.