Question

A jar contains 24 marbles . Some of them are green and the remaining are blue. when a marble is taken out of the jar randomly, if the probability of getting a green marble is 2/3 find the number of blue marbles in the jar

Answer 1

Answer:

24/3=8

8*2=16 green marbles

24-16=8 blue marbles

Answer 2

The number of blue marbles in the jar is =8

Step-by-step explanation:

Probability: The ratio of favorable outcomes to the total outcomes.

$Probability= \frac{\textrm{Favorable outcomes}}{\textrm{Total outcomes}}$

Let total number of green marble be x

Total number of marbles = 24

Therefore the probability of a green marble is $=\frac{x}{24}$

According to the problem ,

$\frac{x}{24} =\frac{2}{3}$

$\Rightarrow x=\frac{2\times 24}{3}$

$\Rightarrow x= 16$

Therefore the number of green marbles in the jar is = 16

Then the number of blue marbles in the jar is =(24-16)=8