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Barkat bought equal numbers of 2-paisa and 30-paisa stamps. If the total cost of the stamps was Tk. 10.00, what was the total number of stamps bought?

Barkat bought equal numbers of 2-paisa and 30-paisa stamps. If the total cost of the stamps was Tk. 10.00, what was the total number of stamps bought? Correct Answer 40

***The question is erroneous.  Let the number of each type stamps is S. Now, 10 TK = 10 x 100 paisa = 1000 paisa So, 20S + 30S = 1000 or, 50S = 1000 or, S = 100/50 = 20 So, the number of total stamps = 20 + 20 = 40 

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