Kalam bought two varieties of rice , costing Tk. 50 /kg and Tk. 60 /kg each , and mixed them in some ratio. Then he sold the mixture at Tk. 70/kg. Making a profit of 20% .What was the ratio of the mixture?-
A. 1 : 10
B. 1 : 5
C. 2 : 7
D. 3 : 8
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সঠিক উত্তরঃ
B.
1 : 5
Explanation:
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