Customers at an ice cream shop took a survey. The results showed that 144 customers rated the shop as being "ver satisfactory." This number represented 45% of the total number of customers who took the survey.

What was the total number of customers who took the survey?

A 189

B 65

C 99

D 320

2

1 pt

There are 90 girls and 60 boys in the sixth grade at a middle school. Of these students, 9 girls and 3 boys write left-handed. What percentage of the sixth graders at this middle school write left-handed?

A 10%

B 8%

C 5%

D 15%

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