23. If the price of each dozen of pen is reduced
by 2 then 6 more pens are available in
42. Find the present value of the pen per
dozen.
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Step-by-step explanation:
Let price of 12 pens = x
Price of 15 pens (1 dozen + 3 more pens) = 30
Price of 1 dozen after reduction = 24
Price of 1 dozen before reduction = 24 +6 = 30
new price per pen is Rs.30/(12+3)=2 so price of one dozen pens is 2*12=24. So original price of one dozen is 24+6=30 Rs.
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