Question

INTR-O ZI , 10 MOTOCICLETE SI 6 AUTOTURISME AU CONSUMAT 218 L DE BENZINA , IAR IN ZIUA URMATOARE 5 MOTOCICLETE SI 6 AUTOTURISME AU CONSUMAT 193 L DE BENZINA . CATI L AU CONSUMAT O MOTOCICLETA SI CATI L UN AUTOTURISM INTR-O ZI

Answer 1

m=motocicleta
a=autoturism
10m........6a........218 l benzina-
 5m.........6a........193 l
___________________
5m....................=25l benzina
5m=125l
m=125:5=5 l benzina/motocicleta
10x5+6a=218l
50l+6a=218l
6a=218l-50l
6a=168l
a=168l:6
a=28 l/autoturism
proba
10x5l+6x28l=50l+168l=218 l
5x5l+6x28l=25l+168l=193l

Answer 2

10 m .....6 a ....218
5 m ......6 a .....193  / x 2

10 m.....6 a......218
10m.....12 a ...386
 ////      6a .....168

6a = 168
a = 168 : 6
a = 28 l
1 autoturism a consumat 28 litri

5m + 6 a = 193 l
5m + 6 x 28 = 193
5m + 168 = 193
5m = 193 - 168 
5m = 25 l
m = 25 : 5 
m = 5 l
o motocicleta  a consumat 5 l iar un autoturism 28 l