need help A and B

3. Jerry builds rocking chairs and porch swings and sells them at a local flea market. The fumber requirements for each type of item are summarized in the table below. Currently, Jerry has 20024 's, 11026 's, and 20014 's in stock. Rocking chairs sell for $90 and porch swings sell a. How many of each type should Jerry make to maximize his revenue? for $190. b. How many pieces of each type of lumber are left over after Jerry has built the number of chairs and swings that maximize his revenue