Question

find the ratio of the price of a pen to that of a ball pen when pens costs is Rs.144per dozen and ball pen costs Rs.80score

Answer 1

Hey friend here is your answer!!

since 1 dozen =12 
 so, Cost of 12 pens =Rs.144
Cost of 1 pen =rs.144/12=Rs.12
  
Since 1 score= 20
So, Cost of 20 ball pens= Rs.80 
cost of one ball pen =Rs.80/20=Rs.4
Ratio of cost of  pen to that of ball pen=12:4
                                                                 =3:1

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