Question

kevin has a spinner that has 10 equal sections and 2 sections of each color—red, blue, green, yellow, and purple. kevin spins the spinner 180 times. about how many times should kevin land on red or purple?
about 18 times
about 36 times
about 40 times
about 72 times

Explanation:

Step1: Find probability of red or purple

There are 2 red and 2 purple sections. Total sections: 10. Probability of red or purple: $\frac{2 + 2}{10}=\frac{4}{10} = 0.4$.

Step2: Calculate expected times

Number of spins: 180. Expected times: $180\times0.4 = 72$.

Answer:

about 72 times