It should be -3 I hope this helps
Answer:
13 pages : 1/2 hour Multiply both sides by 2
26 pages : 1 hour ------>> 26 pages/hr
Flip over 26 pages/hr ----->>> hr / 26 pages = 1 hr / 26 pages
Split up the fraction: (1/26) hr / page
The answer to the question
Proabably. 5 because if there is 2 sides on a coin then you should divide 10÷2 which is 5.