Question

Trei elevi au cules 9940 alune.Cate alune a cules fiecare ,daca primul si al doilea au cules 5575 alune,iar al doilea si al treilea 6647 alune ?

Answer 1

a + b + c = 9 940
a + b = 5 575
b + c = 6 647
___________
a , b , c = ?

5 575 + c = 14 596
c = 14 596 - 5 575
c = 9 021

b + 9 021 = 6 647
b = 9 021 - 6 647
b = 2 374

a + 2 374 = 5 575
a = 5 575 - 2 374
a = 3 201

verificare :
3 201 + 2 374 + 9 021 = 9 940

Answer 2

9 940-5 575=4 375 alune a cules al treilea elev
6 647-4 375=2 272 alune a cules al doilea elev
5 575-2 272=3 303 alune a cules primul elev