Question

In trei hambare se afla 2018 tone de griu. In al doilea hambar se afla de 2 ori mai mult decit in primul, iar al treilea cu 48 tone mai mult decit in al doilea. Cite tone de griu se afla in fiecare hambar? P.S. Prin metoda ecuației.

Answer 1

a+b+c= 2018 tone (notăm hambarele cu litere ) b=2×a c=48+b=48+2×a

a+2×a+48+2×a=2018 tone

5×a+48=2018 tone

5×a=2018-48 =1970

a=1970÷5=394

b=a×2=394×2=788

c=b+48=788+48=836

Verificare a+b+c =394+788+836=2018

Answer 2

a+b+c= 2018
b= 2a
c= 48+b= 48+2a

a+2a+ 48+2a= 2018
a+2a+2a+48= 2018
5a+48= 2018
5a= 2018-48
5a= 1970
a= 1970/5
a= 394 tone de grâu

b= 2a
b= 2•394
b= 788 tone de grâu

c= 48+b= 48+2a
c= 48+ 2•394
c= 48+ 788
c= 836 tone de grâu