Question

Trei muncitori au primit impreuna 2530 lei.Ce suma a primit fiecare muncitor daca plata se face proportional cu nr.de zile lucrate, iar ei au lucrat 7,11 si 5 zile?

Answer 1

x,y,z   dp cu 7, 11  ,5

x/7=y/11=z/5=k
x=7k
y=11k
z=5k

7k+11k+5k=2530
23k=2530
k=110
x=770lei
y=1210lei
z=550lei

Answer 2

a+b+c=2530 lei

7/a=11/b=5/c=k⇒a=7k,b=11k,c=5k⇒7k+11k+5k=2530⇒23k=2530⇒k=2530/23⇒k=110

a=7k⇒a= 7·110⇒a=770lei

b=11k⇒b=11·110⇒b=1210lei

c=5k⇒c=5·110⇒c=550lei