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Andrei  poate manca o pizza in 30 minute, Alex in 15 minute , iar Adrian in 10 minute. In cat timp pot manca cei trei baieti impreuna 6 pizze ?Justificati raspunsul dat.

Răspuns :

ANDREI=1 PIZZA -30 minute 
ALEX=2 PIZZA -3*15=30minute
ADRIAN=3 PIZZE-3*10=30 minute 
6 pizze  in 30 minute