Pat, kate and mark charged a total of 198 hours to a certain project . If pat charged twice as much time to the project as kate and 1/3 as much times as mark, how many more hours did mark charge to the project than kate.	Options:	A) 18	B) 36	C) 72	D) 110	E) 108
Let Kate charge for x hours,   then Pat charged for 2x and Mat - for 6x.   So, 2x+6x+x = 198 -total hours charged for,   x= 22.   Mat charged 6x-x or 5x for more hours than kate, or for 110 hours .   110 is correct
<result>D</result>
Pat, kate and mark charged a total of 198 hours to a certain project . If pat charged twice as much time to the project as kate and 1/3 as much times as mark, how many more hours did mark charge to the project than kate.