Răspuns :
x-lungimea drumului
I zi : x-40x/100=x-2x/5=(5x-2x)/5=3x/5
Ii zi 3x/5-3x/5·3/8=3x/5-9x/40=(3x·8-9x)/40=15x/40=3x/8
3x/8=36
x=(8·36)/3
x=96km
I zi : x-40x/100=x-2x/5=(5x-2x)/5=3x/5
Ii zi 3x/5-3x/5·3/8=3x/5-9x/40=(3x·8-9x)/40=15x/40=3x/8
3x/8=36
x=(8·36)/3
x=96km
a⇔lungimea drumului
prima zi ⇒ a-40a/100=a-2a/5=(5a-2a)/5=3a/5
a doua zi ⇒ 3a/5-3a/5×3/8=3a/5-9a/40=(3a×8-9a)/40=15a/40=3a/8
3a/8=36
a=(8×36)/3
a=96km (lungimea intregului drum parcurs)
prima zi ⇒ a-40a/100=a-2a/5=(5a-2a)/5=3a/5
a doua zi ⇒ 3a/5-3a/5×3/8=3a/5-9a/40=(3a×8-9a)/40=15a/40=3a/8
3a/8=36
a=(8×36)/3
a=96km (lungimea intregului drum parcurs)