Q9 of 65 Page 13

If the price of 1 dozen pen is reduced by ₹ 6, then 3 more pens will be got in ₹ 30. Before the reduction of price, let us calculate the price of 1 donzen pen.

Let the price of a dozen pen before reduction be r

As, price = pens × rate per dozen


30 = pens × r


So, number of pens before reduction is .


After reduction:


Again price = pens × rate per dozen









As rate can never be negative so, price of a dozen pen is


Rs. 11.30.


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