Question

Marius a plantat acelasi numar de panselute cat au plantat Nicolae si Olga impreuna.Nicolae a plantat cu 15 panselute mai mult decat Olga.Cei trei copii in total au plantat 98 de panselute.Cate panselute a plantat fiecare copil?

Answer 1

A I------I                     
B I------I-15-I              = 98 panselute
C I------I-------I-15-I

98-15=83 (am egalat segmentele)
83-15=68
68:4(segmente)= 17 panselute a plantat Olga
17+15=32 panselute a plantat Nicolae
17+32=49 panselute a plantat Marius
Verificare: 17+32+49=98

Answer 2

M=N+O N=15+O M |---------|} O |---------|}. 98. N|----------|.....+15 2x O+15+O+15+O=98 4 O+30=98 4 O=98-38 o=68 O=68:4 O=24 M=2x24+15 M=48+15=63 N=24+15 N=39