Rene has three times as many dolls as her sister, while her sister has two more dolls than their grandmother. If their grandmother has 50 dolls, how many dolls do they have altogether? Let's answer step by step:
If the grandmother has 50 dolls, Rene's sister, who has 2 more dolls than their grandmother, has 50 + 2 = 52 dolls. Together, Rene's sister and the grandmother have 52 + 50 = 102 dolls. Since Rene has three times as many dolls as her sister, she has 52 * 3 = 156 dolls. Altogether, they have 156 + 102 = 258 dolls. The answer: 258.