Q:

correct understanding mathematical question

suppose that  we have following question,this question is not related to  itself mathematics confusion,but language problem and please help me to clarify  English language terms  in mathematics.  question is this :
Simon arrived at work at $8:15$ A.M. and left work at $10:30$ P.M. If Simon gets paid by the hour at a rate of $10$ dollar  and time and ½ for any hours worked over $8$ in a day.  How much did Simon get paid? 
from the beginning i could not understand  what was  main trick in this question,but i have only one :what does mean time and $½$  clearly as i understand  during the  $8$ hour,he is paid  $10$ dollar  per hour,but after  $8$ ? clearly from $4:15$ till $10:30$,we have $6$ hour and $15$ minute,so what is meaning of time and $1/2$?please help me,because i am preparing for GRE exam,and i would like to clarify every English tricks

A:

Time and a half means that each hour after $8$ hours counts as if it was $1\frac{1}{2}$ "regular" hours.  In other words, for overtime (time in excess of $8$ hours) he/she gets paid $15$ dollars an hour.