Question

va rog frumos ajutatima

Answer 1

3 mingi ping-pong ................ 2 mingi tenis ............... 22 lei  / 2
4 mingi ping-pong ................ 4 mingi tenis ............... 40 lei
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6 mingi ping-pong ................ 4 mingi tenis ............... 44 lei
4 mingi ping-pong ................ 4 mingi tenis ............... 40 lei
...................................................................................   scadem 
6 mingi ping-pong - 4 mingi ping-pong = 44 lei - 40 lei
2 mingi ping-pong = 4 lei
1 minge ping-pong = 4 : 2 = 2 lei

3 mingi ping-pong + 2 mingi tenis = 22 lei
3 x 2 lei + 2 mingi tenis = 22 lei
2 mingi tenis = 22 lei - 6 lei = 16 lei
1 minge tenis = 16 lei : 2 = 8 lei