Question

Nelu,Aurelia si Florina au impreuna 1439 alune. Aurelia are cu 79 mai multe decit Nelu, iar Florina are de 4 ori mai multe ca Aurelia. Cite alune are fiecare.

Answer 1

Nelu - n
Aurelia - a
Florina - f

n + a + f = 1439
a = n + 79
f = 4 * a
n + n + 79 + 4 * (n + 79) = 1439

6n + 395 = 1439
6n = 1044
n = 1044 : 6
n = 174 (Nelu)

a = 174 + 79
a = 253 (Aurelia)

f = 253 * 4
f = 1012 (Florina)

Answer 2

N=/........../
A=/........../+79
F=/..........+79/.........+79/.........+79/.........+79/
79x5=395
1439-395=1044
1044:6=174
N=174alune;A=174+79=253alune;F=253x4=1012alune
proba=1012+253+174=1439alune