Question 1159501
3S+15H=30
2S+4H=11
multiply top by -2 and bottom by 3 to eliminate S
-6S-30H=-60
6S+12H=33
-18H=-27
H=$1.50
2S=$5
S=$2.50 substituting into second

check in first $7.50+$22.50=$30.00

Each hat cost $1.50