The cost of pen is 20% more than that of a book and the cost of a CD is 3/4 as much as the cost of the pen. If the cost of the pen is tk 90 more than that oh the CD, what is the cost of the book in taka?
A. 120
B. 126
C. 192
D. 200
E. None of these
সঠিক উত্তরঃ
E.
None of these
Explanation:
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