The XYZ Corporation sells pens, pencils, and erasers. The pens make up 2/5 of all sales, the pencils 1/10 of pens and the erasers 1/2 of pens and pencils together. What percentage of all sales is for eraser?
A. 50%
B. 44%
C. 22%
D. 20%
E. None of these
সঠিক উত্তরঃ
C.
22%
Explanation:
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