Răspuns :
notăm piersicile cu "p" și cireșele cu "c" ;
Metoda comparației :
2 kg p + 3 kg c = 32 RON / × 2
4 kg p + 5 kg c = 56 RON
__________________________
4 kg p + 6 kg c = 64 RON
4 kg p + 5 kg c = 56 RON
________________________ <= scădem
1 kg c = 8 RON
2 kg p + 3 × 8 = 32 RON
2 kg p + 24 = 32 RON / - 24
2 kg p = 8 RON / ÷ 2
1 kg p = 4 RON
Verificare :
2 × 4 + 3 × 8 = 8 RON + 24 RON = 32 RON
4 × 4 + 5 × 8 = 16 RON + 30 RON = 56 RON ( corect )
Răspuns : 8 RON, 4 RON
Succes!
Metoda comparației :
2 kg p + 3 kg c = 32 RON / × 2
4 kg p + 5 kg c = 56 RON
__________________________
4 kg p + 6 kg c = 64 RON
4 kg p + 5 kg c = 56 RON
________________________ <= scădem
1 kg c = 8 RON
2 kg p + 3 × 8 = 32 RON
2 kg p + 24 = 32 RON / - 24
2 kg p = 8 RON / ÷ 2
1 kg p = 4 RON
Verificare :
2 × 4 + 3 × 8 = 8 RON + 24 RON = 32 RON
4 × 4 + 5 × 8 = 16 RON + 30 RON = 56 RON ( corect )
Răspuns : 8 RON, 4 RON
Succes!
2p+3c=32
4p+5c=56
p=?
c=?
4p+5c=56
2p+3c=32
2p+2c=24 RON
2p+3c=32 RON
2p+2c=24 RON/:2
/c=8 RON
p+c=12
p+8=12
p=12-8
p=4 RON
Raspuns: 1 kg caise=8 RON
kg piersici=4 RON