Question: After spinning the wheel 78 times and landing on B 21 times, what is the experimental probability of landing on B? P(B) = [?]% Round your answer to the nearest whole percent.
1. **State the problem:** We want to find the experimental probability of landing on B after spinning the wheel 78 times and landing on B 21 times.
2. **Formula for experimental probability:**
$$P(B) = \frac{\text{Number of times B occurs}}{\text{Total number of spins}}$$
3. **Substitute the values:**
$$P(B) = \frac{21}{78}$$
4. **Simplify the fraction:**
$$P(B) = \frac{\cancel{3} \times 7}{\cancel{3} \times 26} = \frac{7}{26}$$
5. **Convert to decimal:**
$$P(B) = \frac{7}{26} \approx 0.2692$$
6. **Convert to percentage:**
$$P(B) \times 100 = 0.2692 \times 100 = 26.92\%$$
7. **Round to the nearest whole percent:**
$$27\%$$
**Final answer:** The experimental probability of landing on B is **27%**.