Question

The numbers 1 through 50 are written with red marker on slips of paper while the numbers 51 through 100

Answer 1

A. we want to pull 15 or less from the bag and there are 100 possibilities
$\frac{15}{100}$=$\frac{3}{20}$
the probability is 3 out of 20

B. we are trying to pull a 55,60,65,75,80,85,90,95,or 100 that is 9 possibilities out of 100

$\frac{9}{100}$  is the possibility of pulling a multiple of 5 that is blue 
 

Answer 2

A. The probability of picking a number less than 16 or a number in red is 65/100.
b. The probability of picking a number written in blue or a multiple of 5 is 70/100.