There is a math problem about the hit rate.

1, Xiaoming threw 20 balls and won 8. What percentage did he hit?

Solution: According to the formula, the hit rate is 8÷20× 100%=40%.

2. Wang Bing missed four shots, but he made six. What percentage did he hit?

Solution: There are 6-4=2 rounds. According to the formula, the hit rate is about 2÷6≈0.333=33.3%.

3. How many balls were thrown, and the hit rate was 52%. If you hit 13 balls, how many balls did you miss?

Solution: Suppose you miss X shots.

13÷52%-x= 13

25-x= 13

x= 12

It can also be solved by arithmetic. If * * * throws 13÷52%=25 (pieces), then you miss 25- 13= 12 (pieces).