Steven wants to buy some candy with his birthday money. He can choose from Jelly Belly jelly beans that sell for $5.99 per pound and Brach's variety that sells
for $3.99 per pound. He likes to have twice the amount of Jelly Belly jelly beans as Brach's variety. If he spent a total of $63.88 how many pounds of each type of candy did he buy?

Part 1 of 2
Steven bought (blank) lb of Jelly Belly jelly beans

Part 2 of 2
Steven bought (blank) lb of Brach's variety.