Three jackets cost 3 x $10 = $<<3*10=30>>30.
Two pairs of shorts cost 2 x $6 = $<<2*6=12>>12.
And, four pairs of pants cost 4 x $12 = $<<4*12=48>>48.
Therefore, Iris spent $30 + $12 + $48 = $<<30+12+48=90>>90.
#### 90