 
 <translate> Robie filled a total of 2 + 5 = 7 boxes. So, he had 7 x 10 = 70 hockey cards from the 7 boxes. Thus, he had a total of 70 + 5 = 75 cards in the beginning.
The answer: 75. <hau> Robie ya cika duka akwatuna 2 + 5 = 7. Don haka, yana da 7 x 10 = 70 katunan hockey daga akwatunan 7. Saboda haka, yana da jimlar 70 + 5 = 75 katunan a farkon. Amsar ita ce: 75. 