###Human: Marta is arranging floral centerpieces for a reception party.  Each arrangement needs to have 8 roses,12 daisies, 3 snapdragons and twice as many lilies.  The reception will have 10 tables.  How many flowers will she need in total to fill this order?, ### Assistant: She needs twice as many lilies as the 3 snapdragons in the arrangement so she needs 2*3 = 6 lilies
She needs 8 roses, 12 daisies, 3 snapdragons and 6 lilies for a total of 8+12+3+6 = 29 flowers per arrangement
She needs 29 flowers per each of the 10 tables for a total of 29*10 = 290 flowers 
 So the answer is :  290