 
 <translate> Joey will take a break after 30 * 0.7 = 21 pages. Joey will have to read 30 - 21 = 9 pages more.
The answer: 9. <hau> Joey zai yi hutu bayan 30 * 0.7 = 21 shafuka. Joey zai karanta 30 - 21 = karin shafuka 9. Amsar ita ce: 9. 