Sansa is a famous artist, she can draw a portrait and sell it according to its size. She sells an 8-inch portrait for $5, and a 16-inch portrait for twice the price of the 8-inch portrait. If she sells three 8-inch portraits and five 16-inch portraits per day, how many does she earns every 3 days? Let's think first. Chain of thought:
Sansa earns $5 x 3 = $15 every day by selling three 8 - inch portraits. The price of the 16 - inch portrait is $5 x 2 = $10 each. So, she earns $10 x 5 = $50 every day by selling five 16 - inch portraits. Her total earnings is $50 + $15 = $65 every day. Therefore, the total amount she earns after 3 days is $65 x 3 = $195.
Therefore, the answer is 195.