1) Sam wants to buy a new camera, and decides on the following rating system:
Image quality – 50%
Battery life – 30%
Zoom Range – 20%
Camera A gets 8 out of 10 for Image Quality, 6 for battery life and 7 for zoom range.
Camera B gets 9 for Image Quality, 4 for battery life and 6 for zoom range.
Which camera is the best?