Question

FINISH
Total 00:23:12
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Mathematica v
Revisit
Question # 1
A box contains 12 green balls and some red balls. If
the probability of drawing a red ball from the box is
twice that of drawing a green ball, then find the
number of red balls in the box.​

Answer 1

Answer:

Total balls=12

Let the red balls be x

So,

P

1

=

12

x

If the red balls increased to 6 then,

Total balls will be =12+6=18

Red balls will be=x+6

So,

P

2

=

18

x+6

Now,

12

x

=

18

x+6

x=

3

x+6

3x=x+6

2x=6

x=3