Răspunsuri

2014-05-22T19:39:46+03:00
5z............90zile
30z............x  sunt invers proportionale

x=5*90/30
x=5*3=15 zile
2014-05-22T19:40:09+03:00


5 ZIDARI...............................90 ZILE

30 ZIDARI.................................X

X=5*90/30

X=15

1 5 1