What is the height of a triangle with the area 277.2 square inches and base 44 inches?

Abike shop sells you a bicycle for $63 and a helmet for $21. the total cost is 150% of what the shop spent originally. how much did the shop spend originally? how much profit did the bike shop earn by selling the bicycle and helmet to you ?

The anwser cause i do not understand just plez

What are the greatest common factor of 75 and 30