A can write 75 pages in 25 hrs. A and B together can write 135 pages in 27 hrs. In what time can B write 42 pages?
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Q:
A can write 75 pages in 25 hrs. A and B together can write 135 pages in 27 hrs. In what time can B write 42 pages?
- 117 hrsfalse
- 219 hrsfalse
- 321 hrstrue
- 423 hrsfalse
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