+22+(-3)+(+4)+(-2)+(-8)+(+17)+(-2)+(-3)+(+12)+(+7)+(-5)
=62+(-23)
=39
答收工时他们在A地的后面39千米处
22+3+4+2+8+17+2+3+12+7+5
=62+23
=85千米
耗油:85×0.4=34升
+22+(-3)+(+4)+(-2)+(-8)+(+17)+(-2)+(-3)+(+12)+(+7)+(-5)
=62+(-23)
=39
答收工时他们在A地的后面39千米处
22+3+4+2+8+17+2+3+12+7+5
=62+23
=85千米
耗油:85×0.4=34升