Question

Un album costa cat doua carti , iar doua carti costa cat trei penare. Daca 2 penare , 2 carti si un album costa 128 de lei , aflati costul unui album , al unei carti si al unui penar .

Answer 1

a = 2c = 3p
2p + 2c + a = 128
2p + 3p + 3p = 128
8p = 128
p = 1328 : 8
p = 16
a = 3p
a = 3 * 16
a = 48
a = 2c
48 = 2c
c = 48 : 2
c = 24
albumul = 48 lei, penarul = 16 lei, cartea = 24 lei

Answer 2

a=2c,2c=3p,a=3p
2p+2c+a=128
a=?
c=?
p=?

2p+3p+3p=128
8p=128
p=128:8
p=16
a=3*16=48
2c=3p,2c=3*16=48
c=48:2=24
2*16+2*24+48=32+48+48=128