Question

Intr-o scoalasunt986 de elevi in clasele primare.In clasele intai, a doua si a treia sunt715 elevi.In clasele a doua si a treia sunt 498 elevi, iar in clasele n a treia si a patra,525 elevi.Cati elevi sunt in fiecare serie de clasa ?

Answer 1

Clasa I+II+III=715
II+III=498
III+IV=525
Rezolvare :
I=715-498=217
IV=986-217-498=271
III=525-271=254
II=498-254=244
I+II+III+IV=217+244+254+271=986