Request a call back

# CBSE Class 10 Answered

the probability of selecting a green marble at random from a jar that contains only green,white and yellow marbles is 1/4.the probability of selecting a white marble at random from the same jar is 1/3.if this jar contains 10 yellow marbles . what is the total number of marbles in the jar ?
Asked by renukasahu8 | 28 Jan, 2011, 04:18: PM Expert Answer
Dear student,

Let the number of Green marbles be G and the number of White marbles be W.

Therefore, the total number of marbles is G + W + 10.

Prob(randomly selecting green marble) = G/(G+W+10) = 0.25
=> 3G = W + 10      ----(1)

Prob(randomly selecting white marble) = W/(G+W+10) = 0.33
=> 2W = G + 10      ----(2)

Solving the system of equations (1) and (2), we get
G = 6.
W = 8.

Therefore, the total number of marbles = 6 + 8 + 10 = 24.

Regards Topperlearning.

Answered by | 29 Jan, 2011, 12:41: PM

## Application Videos

CBSE 10 - Maths
Asked by sonalikalantre193 | 02 Feb, 2022, 09:54: AM ANSWERED BY EXPERT
CBSE 10 - Maths
Asked by kavitajasmine12345 | 02 Jan, 2022, 11:45: AM ANSWERED BY EXPERT
CBSE 10 - Maths
Asked by plaltarapur | 25 Oct, 2021, 06:56: PM ANSWERED BY EXPERT
CBSE 10 - Maths
Asked by Trisha Gupta | 23 Sep, 2021, 06:57: AM ANSWERED BY EXPERT
CBSE 10 - Maths
Asked by shwetarai12345678910 | 12 Oct, 2020, 06:24: AM ANSWERED BY EXPERT
CBSE 10 - Maths
Asked by acshanadhana15 | 06 Aug, 2020, 01:53: PM ANSWERED BY EXPERT
CBSE 10 - Maths
Asked by drhimasingh | 09 Mar, 2020, 11:06: AM ANSWERED BY EXPERT
CBSE 10 - Maths
Asked by officialmehak26 | 03 Feb, 2020, 03:02: PM ANSWERED BY EXPERT
CBSE 10 - Maths
Asked by officialmehak26 | 02 Feb, 2020, 08:08: PM ANSWERED BY EXPERT
CBSE 10 - Maths
Asked by prakharupaddyay | 09 Nov, 2019, 07:36: AM ANSWERED BY EXPERT