A gardener can plant no more than 10 rows of tomatoes in his garden but he wants to plant at least one row of tomatoes. His son would like to plant at least
two rows of corn. Unfortunately, the garden can only accommodate 14 rows of
plants. When they sell the vegetables they will get $30 for each row of
tomatoes and $20 for each row of corn. How many rows of each crop should
they plant to get the maximum return for their products using Linear
Programming methods?