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Question

Ronald and Elan are working on an assignment. Ronald takes 6 hours to type 32 pages on a computer and Elan takes 5 hours to type 40 pages. How much time will they take, working together on two different computers to type an assignment of 110 pages?

 



Your Answer
A

7 hrs 30 mins

Correct Answer
B

8 hrs 15 mins

Correct Answer
C

8 hrs 25 mins

Your Answer
D

None of these


Solution

The correct options are
B

8 hrs 15 mins


C

8 hrs 25 mins


Number of pages typed by Ronald in 1 hour = 326=163

Number of pages typed by Elan in 1 hour = 405=8

Number of pages typed by both in 1 hour = 163 + 8 = 403

Time taken by both to type 110 pages = 110×340=334 hrs=8hrs15 min =495 min

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