Simone ate 1/2 of an apple each day for 16 days. Lauri ate 1/3 of an apple each day for 15 days. How many apples did the two girls eat altogether?
Simone = (1/2) * 16 = <<(1/2)*16=8>>8
Lauri = (1/3) * 15 = <<(1/3)*15=5>>5
8 + 5 = <<8+5=13>>13
Together they ate 13 apples.
#### 13