Răspuns :
D = 5 * S
D - 100 = S+100
D = S + 200
5* S = S + 200
4*S = 200
S = 50
D = 250
D - 100 = S+100
D = S + 200
5* S = S + 200
4*S = 200
S = 50
D = 250
x - numarul bilelor Silviei
5x numarul bilelor Dianei
5x - 100 = x
5x - x = 100
4x = 100
x = 100 : 4
x = 25
Silvia = 25 bile
Diana = 25 x 5 = 125
125 - 100 = 25
5x numarul bilelor Dianei
5x - 100 = x
5x - x = 100
4x = 100
x = 100 : 4
x = 25
Silvia = 25 bile
Diana = 25 x 5 = 125
125 - 100 = 25