 
 <translate> Her geography textbook has 160 + 70 = 230 pages. The sum of pages of her history and geography textbook is 160 + 230 = 390 pages. Her math textbook has 390 / 2 = 195 pages. Her science textbook has 160 x 2 = 320 pages. In total, there would be 160 + 230 + 195 + 320 = 905 pages. So the final answer is 905. <hau> Littafin karatunta na ilimin kasa yana da shafuka 160 + 70 = 230. Adadin shafuka na tarihinta da littafin labarin kasa shine 160 + 230 = 390 shafuka. Littafin lissafin nata yana da shafuka 390 / 2 = 195. Littafin karatunta na kimiyya yana da shafuka 160 x 2 = 320. A duka, za a samu shafuffuka 160 + 230 + 195 + 320 = 905. Saboda haka amsar karshe ita ce 905. 