Question 27
ProbabilityA bag contains 20 green and a number of red identical balls. The probability of selecting at random a red ball is 3/5. How many balls are there in the bag?
- A.50
- B.30
- C.60
- D.12
Show the answer and explanation
Answer: A (50)
Explanation
Green balls make up 2/5 of the bag, so 20 = 2/5 of the total and the total is 50.