A bag contains 16 red balls and 20 blue balls only. How many white balls must be added to the bag so that the probability of randomly picking a red ball is equal to \(\frac{2}{5}\)
a
4
b
20
c
24
d
40
Explanation
Correct Option
aVideo Explanation
No video available
Post your Contribution
Share:
Discussions (11)
umul khair
9 months ago
a clear explanation
16/36+x=2/5
16/36+x=2*8/5*8
the 8was gotten by dividing d two numerators
5*8=40
then, 40-36=4. thank you🙏
