The ratio of labor cost and materials cost for making a radio is 2:7. If the cost price is 90% of the selling price which is Tk. X, what is the labor cost per radio?
A. 0.1x
B. 0.2x
C. 0.3x
D. 0.4x
E. 0.5x
সঠিক উত্তরঃ
B.
0.2x
Explanation:
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