Kristine spends $3 + $1 = $<<3+1=4>>4.

Three sets of barrettes cost 3 x $3 = $<<3*3=9>>9.

Crystal spends $9 + $1 = $<<9+1=10>>10.

Therefore, the two girls spend $4 + $10 = $<<4+10=14>>14.

# Answer

14
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
One set of barrettes costs $3 each, and one comb costs $1 each. Kristine buys one set of barrettes and one comb. Crystal buys three sets of barrettes and one comb. How much do the two girls spend altogether?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
14
One set of barrettes costs $3 each, and one comb costs $1 each. Kristine buys one set of barrettes and one comb. Crystal buys three sets of barrettes and one comb. How much do the two girls spend altogether?
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