Question the-ta
The table summarizes the distribution of color and shape for tiles of equal area.
| Red | Blue | Yellow | Total | |
|---|---|---|---|---|
| Square | ||||
| Pentagon | ||||
| Total |
If one of these tiles is selected at random, what is the probability of selecting a red tile? (Express your answer as a decimal or fraction, not as a percent.)
The table summarizes the distribution of color and shape for 100 tiles of equal area. Red
Hard-difficulty · SAT Math · Probability & Conditional Probability — Simple probability. Read the question above, select your answer, and check the full explanation below to understand exactly why the correct choice works.
Answer explanation
The correct answer is . It’s given that there are a total of tiles of equal area, which is the total number of possible outcomes. According to the table, there are a total of red tiles. The probability of an event occurring is the ratio of the number of favorable outcomes to the total number of possible outcomes. By definition, the probability of selecting a red tile is given by , or . Note that 3/10 and .3 are examples of ways to enter a correct answer.
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