Question

If A can type 80 pages in 20 hours, A and B together can type 135 pages in 27 hours, then in how many hours will B type 12 pages?

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Answer 1

Answer:

12 HOURS

Step-by-step explanation:

pages typed by A in 1 hour= 80/20=4

pages typed by A and B in 27 hours= 135 (given)

pages typed by A alone in 27 hours= 4*27=108

therefore: pages typed by B in 27 hours= 135-108= 27

=pages typed by B in 1 hour = 27/27=1

hours taken to write 12 pages= 1*12=12

=12 hours

Answer 2

hope that's help u....