Anil and Suresh are working on a special assignment. Anil needs 6 hours to type 32 pages on a computer and Suresh needs 5 hours to type 40 pages. If both of them work together on two different computers, how much time is needed to type an assignment of 120 pages? Choose the correct choice from the following
A) 8 hours 15 mins
B) 8 hours
C) 9 hours
D) 7 hours
E) 6 hours
Pages typed by Anil in 1 hour = 32/6 = 16/3   Pages typed by Suresh in 1 hour = 40/5= 
<gadget id="calculator">40/5</gadget>
<output>8</output>
8   Pages typed by Anil and Suresh in 1 hour= 16/3 + 8 = 40/3   Time taken to type 120 pages when Anil and Suresh work together = 120 × 3 /40 = 9   = 9 hour   Answer is 9 hours.
<result>C</result>
Anil and Suresh are working on a special assignment. Anil needs 6 hours to type 32 pages on a computer and Suresh needs 5 hours to type 40 pages. If both of them work together on two different computers, how much time is needed to type an assignment of 120 pages?