

MCQOPTIONS
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1. |
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? |
A. | 17 hrs |
B. | 19 hrs |
C. | 21 hrs |
D. | 23 hrs |
Answer» D. 23 hrs | |