On Eduardo's workbench are the following paint cans.
• 3 cans of red paint
• 5 cans of blue paint
• 8 cans of green paint
• 4 cans of yellow paint
Eduardo will randomly choose one can of
paint. What is the probability that he will
choose a can of red paint or a can of blue
paint? (71A, 7.1B, 7.1F)