By selling a marker for Rs.18, a boy loses one nineteenth of what it costs him. The cost of the marker is? 

1 Answer

Answer :

Let us assume cost price is x

Ie., x – 18=1/ 19*x

X – 18=x/19

X –x/19= 18

18x=18*19

18x=342

X=342/18

X=19

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