A discount of 15% on one article is the same as a discount of 20% on another article. The costs of the two articles can be :
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first off all we have to take the total amount be X
then we have to solve for 15%
and next we have to solve for 20%
then we have to addition of both the answer and then it will come .
then we have to solve for 15%
and next we have to solve for 20%
then we have to addition of both the answer and then it will come .
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