If Anika is 30 now, in 15 years, she'll be 30+15=<<30+15=45>>45 years old.

At 30, Anika is 4/3 the age of Maddie, meaning Maddie is 4/3*30=<<4/3*30=40>>40 years.

In 15 years, Maddie will be 40+15=<<40+15=55>>55 years old.

Their total age in 15 years will be 55+45=<<55+45=100>>100

Their average age in 15 years will be 100/2=<<100/2=50>>50

# Answer

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<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
At 30, Anika is 4/3 the age of Maddie. What would be their average age in 15 years?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
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At 30, Anika is 4/3 the age of Maddie. What would be their average age in 15 years?
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