Doi excursionisti parcurg in prima zi 1/2 din distantă , a doua zi 3/4 din cat a rămas, iar a treia zi restul de 60 km . Ce distanta și -au propus cei doi excursionisti sa parcurgă?

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Răspunsuri

Cel mai inteligent răspuns!
2014-04-24T18:40:25+03:00
Notam cu x intreaga distanta
prima zi=1 supra 2 ori x = x/2
x-x/2(amplificam cu 2)= x/2 restul
a doua zi= 3/4 ori x/2=3x/8
a treia zi putem sa il scriem altfel: x-x/2-3x/8(amplificam cu 8 si 4)=x/8
apoi le aduni si gata ca sa aflii toata distanta

Nu aduni nimic. Spui ca x/8=60, de unde x=480.
de unde x
480
â-
OF! x=60x8=480.