Lia, phil and cam collect a total of $200.30 for a holiday fundraiser. phil collects $12.80 more than lia. cam collects three times as much as lia. how much does each person collect?

Quadrilateral abcd in the figure below represents a scaled-down model of a walkway around a historic site. quadrilateral efgh represents the actual walkway. abcd is similar to efgh. what is the total length, in feet of the actual walkway?

Twice the sum of a number and 2 is equal to three times the difference of the number and 8. find the number.

Middle school math doesn't have to be a drawing