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.

# Answer

13
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
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?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
13
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?
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