Anumber line contains points q, r, s, and t. point q is on the coordinate 4, r is on the coordinate 8, s is on the coordinate 9, t is on the coordinate 12. find the probability that a point chosen at random on qt is on st. express your answer as a percent.

a) 25%
b) 37.5%
c) 44%
d) 51.5%

Pranav and molly are selling pies for a school fundraiser. customers can buy blueberry pies and pumpkin pies. pranav sold 6 blueberry pies and 4 pumpkin pies for a total of $106. molly sold 6 blueberry pies and 3 pumpkin pies for a total of $90. find the cost of each of one blueberry pie and one pumpkin pie