Three apples and 4 oranges cost Tk. 32. Four apples and three oranges cost Tk. 31.One apple, 1 orange and 1 papaya cost Tk. 28. What is the cost of a papaya?
A. 18
B. 20
C. 21
D. 17
E. 19
সঠিক উত্তরঃ
E.
19
Explanation:
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