Jacob has some red balls and some green balls in a bag. Altogether he has 70 balls. Jacob picks one ball from the bag. The probability that Jacob picks a red ball is x and the probability that Alice picks a green ball is 4x. Work out how many green balls are in the bag.
Added by Kisell C.
Step 1
Since these events are mutually exclusive, the sum of their probabilities must equal 1. Therefore, we have: x + 4x = 1 5x = 1 x = 1/5 ** Show more…
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