11+19=30
12+18=30
13+17=30
14+16=30
15+20=35
30+30+30+30+35=155
11+19(30)+12+18(30)+13+17(30)+14+16(30)+15+20(35)=155
11+19=30
12+18=30
13+17=30
14+16=30
15+20=35
30+30+30+30+35=155
11+19(30)+12+18(30)+13+17(30)+14+16(30)+15+20(35)=155