5*10+2*5+4*50+3*10=62.30 bani.
62.30-
7.50
= 54 .80 bani ( raman dupa cumpararea tricoului)
54.80-
10 lei = 44.80 bani (dupa cumpararea mingii )
13.30+13.30=26.60 bani ( doua tricouri)
44.80-
26.60= 18.20 lei ( ii raman )
45.00-
18.30= 27.70 ( lei necesari)