Răspuns :
a=primul magazin
b=al doilea magazin
a=3b
a+b=360 -> 3b+b=360
4b=360
b=360:4
b=90=> a+90=360
a=360-90
a=270
b=al doilea magazin
a=3b
a+b=360 -> 3b+b=360
4b=360
b=360:4
b=90=> a+90=360
a=360-90
a=270