There are 20 pens in a package. ten of the pens are black, 8 are blue, and the rest are red. which ratio represents the number of red pens to black pens?
a.1/10
b.1/5
c.4/5
d.5/1

In a certain city, the hourly wage of workers on temporary employment contracts is normally distributed. the mean is $15 and the standard deviation is $3. what percentage of temporary workers earn less than $12 per hour? a. 6% b. 16% c. 26% d. 36%