Question

intr o cutie sunt bomboane de ciocolata.daca se impart copiilor cate 5 bomboane de fiecareatunci 2 copii raman fara bomboane daca se impart 4 bomboane in cutie raman 17 bomboane.cate bomboane sunt in cutie si cati copii vor primi bomboane

Answer 1

notam b= nr bomboanelor

             c= nr copiilor

b=5(c-2)

b=4c+17

5(c-2)=4c+17

5c-10=4c+17

5c-4c=17+10

c=27  (copii)

b=5(27-2)=5·25

b=125 (bomboane)

sau b=4·27+17=108+17=125

verificare: (27-2)copii· 5 bomboane=25·5=125 bomboane

                 4bomboane·27copii+17bomboane=108+17=125 bomboane