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Murad bought equal numbers of 20-paisa and 30-paisa stamps. If the total cost of the stamps was Tk. 10.00 what was the total number of stamps bought?

Murad bought equal numbers of 20-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

  ATQ 20x + 30x = 10 × 100  = > 50x = 1000 = > x = 1000/50 ∴ x = 20   the total number of stamps = 20 + 20 = 40 (ans)

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