Question

Un automobil are de parcurs un traseu in 3 zile. In prma zi a parcurge 1/3 din distanta, in a doua zi 40% din distanta ramasa, iar in a treia zi 132 km.
a) Cati km are traseul?
b) Cati km a parcurs automobilul in prima zi? Dar in ziua a doua?

Answer 1

1)x/3  ;               x-x/3 =3x/3-x/3 =2x/3  ramas

2)40/100*2x/3 =4x/15

3)132 km

x/3+4x/15+132 =x    numitor  15

5x+4x+1980 =15x

15x-5x-4x =1980

6x =1980 

x =330

1)x/3 =330/3 =110 km

2)4*/15 =4*330/15 =88

3)132 km