Răspuns :
Răspuns:
a+b=40=>a=40-b
24,9a+12,5b=562
24,9(40-b)+12,5b=562
996-24,9b+12,5b=562
12,4b=996-562=>b=434:12,4=>b=35 bilete copil
a=40-35=>a=5 bilete adult
verificare: 35·12,5+5·24,9=437,5+124,5=562 lei
Răspuns:
a+b=40=>a=40-b
24,9a+12,5b=562
24,9(40-b)+12,5b=562
996-24,9b+12,5b=562
12,4b=996-562=>b=434:12,4=>b=35 bilete copil
a=40-35=>a=5 bilete adult
verificare: 35·12,5+5·24,9=437,5+124,5=562 lei