Question

120 students are interviewed.

72 students drink Monster with the ratio of those drinking the regular type to the sugar free being 5:3.

The remaining students drink Red Bull, with the ratio of those drinking the regular type to the sugar free being 3:1.

What is the probability that a student chosen at random drinks sugar free Red Bull.

Give your answer as a decimal.

Answer 1

The answer is 0.1

Explanation:

120 - 72 = 48

1/4 x 48 = 12

12/120 = 1/10

Therefore, 1/10 as a decimal is written as: 0.1