On the average Mr.Jackson has 2 hours to plan for an long hour meeting he talk to his assistant 7 hours to prepare the paper work needed.How much hours should jackson and assistant has t plan for 30 min meeting? Choose the correct choice from the following options
A) 4.5 hr  B) 4.8 hr  C) 4.9 hr  D) 5.5 hr  E) 6.5 hr

Rationale: for a 1 hour talk he took total of 9 hr time 1 hr = 9 hr ( 2 + 7 ) 30 min = 1 / 2 hr = ? so 9 * 1 / 2 div by 1 4.5 hr answer : a
Answer: A