Diane bought twenty more apples than Cecile. If Cecile bought 15 apples, how many apples did they buy altogether?
How many apples did Diane buy? ** Diane bought 15 + 20 = <<15+20=35>>35 apples.
How many apples did they buy altogether? ** Therefore, they bought 15 + 35 = <<15+35=50>>50 apples altogether.
#### 50