One fast typist type some matter in 3 hrs and another slow typist type the same matter in 5hrs. If both do combine in how much time they will take to finish.	Choose the correct option:	A) 1 hr 5 mins	B) 1 hr 10 mins	C) 1 hr 12 mins	D) 3 hr 10 mins	E) 4 hr 5 mins
Fast's 1 hr work = 1/3   slow's 1 hr work = 1/5   1/3 + 1/5 = 8/15   they ll finish in 15/8hrs= 1 7/8 ==&gt; 1 hr 12 mins   ANSWER:1 hr 12 mins
<result>C</result>
One fast typist type some matter in 3 hrs and another slow typist type the same matter in 5hrs. If both do combine in how much time they will take to finish.