Răspuns:

5c...2n...4a....44lei ×3

3c....6n....2a....40lei

15c...6n...12a...132lei

3c...6n....2a.....40lei

12c+10a= 92lei

3a=c

36a+10a= 92

46a= 92

a= 92÷46= 2

c= 2×3= 6

3×6+ 6n+ 2×2= 40lei

18+4+6n= 40lei

6n= 40-22

6n= 18

n= 18÷6= 3

6×6+ 2×3+ 10×2= 36+6+20= 62 lei