Maverick had a total of 60 peach tarts and blueberry tarts for sale. After selling 1/3 of the peach tarts and 2/3 of the blueberry tarts, he had twice as many blueberry tarts left as peach tarts. How many blueberry tarts did Maverick sell?
(1) 15
(2) 32
(3) 48
(4) 50
p+b = 60
1/3 b = 2(2/3 p)
Looks like 12 peach and 48 blueberry to start with.