Mathematics · Data Interpretation

A graph indicates the number of three types of machines, MA, MB, and MC, assembled by six technicians, R, A, S, N, V, and P, during a specific time period. Suppose technician A assembled 12, 14, and 16 machines of types MA, MB, and MC respectively (Total = 42), and technician P assembled 14, 16, and 20 machines of types MA, MB, and MC respectively (Total = 50). Find the difference between the total number of all three types of machines assembled by technician A and technician P.