Martine has 6 more than twice as many peaches as Benjy. Benjy has one-third as many peaches as Gabrielle. If Martine has 16 peaches, how many does Gabrielle have? Let's answer step by step:
Benjy has b peaches. Martine has 6 + 2b = 16 peaches. 2b = 10. b = 5. Then Gabrielle has 5 * 3 = 15. The answer: 15.