If 5 choc ices cost 330p how much do 9 cost?

Determine the number of girls in a math class with 87 boys if there are 25 girls for every 75 boys

How do i start to solve? would appreciate a walk-thru! a bird sitting 16ft above the ground in an apple tree dislodges an apple. after how many seconds does the apple land on the ground? (assuming that no branches will interfere with it's fall)

In the diagram of circle o, what is the measure of zabc?