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?
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.
#### 14