Find the coordinates of the point p that lies along the directed line segment from a(1,1) to b(7,3) and partitions the segment in the ratio 1 to 4

Afactory buys 10% of its components from suppliers b and the rest from supplier c. it is known that 6% of the components it buys are faulty. of the components brought from suppliers a,9% are faulty and of the components bought from suppliers b, 3% are faulty. find the percentage of components bought from supplier c that are faulty.