Question

cati lei costa 10 acadele daca 6 acadele costa cu 28 de lei mai putin decat 13 acadele ?

Answer 1

Daca 6 acadele costa cu 28 lei mai putin decit 13 rezulta ca
1acadea...x lei
6 acadele13x-28
13 acadele...6x+28
6x+28=13x
6x -13x=-28
-7x=-28
7x=28
x=28:7
x=4lei
10 acadele costa  de zece ori mai mult
10*4=40lei

Answer 2

13 acadele=6 acadele+28 de lei....
13 acadele-6 acadele=28 de lei
7 acadele=28 de lei
o acadea=28:7=4lei.......deci...10 acadele=40 de lei...