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30 pens and 75 pencils altogether were purchased for Tk. 510 . If the average price of a pencil was Tk. 2 , what was the average price of a pen ?

30 pens and 75 pencils altogether were purchased for Tk. 510 . If the average price of a pencil was Tk. 2 , what was the average price of a pen ? Correct Answer Tk. 12

According to the question, 30 pens + 75 pencils = Tk. 510 Average price of a pencil = Tk. 2 Price of 75 pencils = 2 × 75 = Tk. 150 ∴ Price of 30 pens = 510 - 150 = Tk. 360 ∴ Average price of pen = 360/30 = Tk. 12

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