SAT Probability and conditional probability Practice Question 7 (Easy)

Question bank / Probability and conditional probability

Math · Problem-Solving and Data AnalysisEasy

A box contains $40$ tiles, and some of them are blue. If one tile is selected at random, the probability that it is blue is $0.35$ . How many blue tiles are in the box?

$5$

$14$

$26$

$35$

Show answer and explanation

Answer: B

The probability of blue equals the number of blue tiles divided by the total. So the number of blue tiles is $0.35 \times 40 = 14$ .

Choice C is the number of tiles that are not blue ( $40 - 14$ ).

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