Răspunsuri

2014-09-28T15:08:37+03:00
5 copii umfla 5 baloane in 5 minute =>
un copil umfla un balon in 5 minute =>
in 15 minute un copil umfla 3 baloane =>
10 copii umfla 30 de baloane in 15 minute
1 4 1