 
 <translate> The number of birthday presents that David found is 60 / 2 = 30. For his birthday and Christmas, David found a total of 30 + 60 = 90 presents. So the answer is 90. <hau> Adadin kyautar ranar haihuwar da David ya samu shine 60 / 2 = 30. Don ranar haihuwarsa da Kirsimeti, David ya sami jimillar 30 + 60 = 90 kyauta. Amsar ita ce 90. 