Răspuns:
x/3 prima parcela
³⁾x-x/3=2x/3 rest
25/100·2x/3=1/4·2x/3=(2x/12)⁽²=x/6 a2a parcela
2,4ha a3a parcela
¹⁰⁾x/3+⁵⁾x/6+³⁾24/10=³⁰⁾x
10x+5x+72=30x
72=30x-15x
x=72:15=>x=4,8 ha suprafata terenului
1/3·4,8=1,6ha are prima parcela
4,8-1,6=3,2ha rest
25/100·3,2=0,8ha are a2a parcela
2,4ha are a3a parcela
vrificare:
1,6+0,8+2,4=4,8ha
