Give the step-by-step reasoning process and then the final answer. The number of dishes Sandrine washed was 10 more than the number of bananas Charles cooked. Also, the number of bananas Charles cooked was 3 times the number of pears he picked. If Charles picked 50 pears, how many dishes did Sandrine wash?
If the bananas Charles cooked were 3 times the number of pears he picked, then Charles cooked 3 * 50 = 150 bananas. Since all the dishes that Sandrine washed were 10 more than the number of bananas Charles cooked, Sandrine washed 150 + 10 = 160 dishes.
The final answer: 160.