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ICSE Class 8 Answered

Tanya buys an electic iron for Rs 712.80, which includes two successive discounts of 10% and 4% respectively on the marked price and then 10% tax on the remaining price . Find the marked price of electric iron  
Asked by qa_action | 16 Sep, 2018, 10:43: PM
answered-by-expert Expert Answer
Let the marked price = x 
two successive discounts of 10% and 4% on the marked price.
Therefore the remaining price,
 
= x begin mathsize 16px style open parentheses 1 minus space 10 over 100 close parentheses open parentheses 1 minus space 1 over 100 close parentheses space equals space straight x space space cross times space 90 over 100 space cross times space 96 over 100 end style
begin mathsize 16px style Therefore space taxes space of space 10 percent sign space on space remaining space price space equals space fraction numerator 90 space cross times space 96 straight x space over denominator 10000 end fraction space cross times space fraction numerator 10 over denominator 100 space end fraction



end style
Tanya buys iron for Rupees 712. 80.
Hence, 
begin mathsize 16px style fraction numerator 90 space cross times space 96 straight x over denominator 10000 end fraction space plus fraction numerator begin display style 90 space cross times space 96 straight x end style over denominator begin display style 10000 end style end fraction space cross times 10 over 100 equals space 712.80
rightwards double arrow space fraction numerator begin display style 90 space cross times space 96 straight x end style over denominator begin display style 10000 end style end fraction open parentheses 1 space plus space 10 over 100 close parentheses equals space 7128 over 10
After space solving comma space we space get
straight x space equals space 750 space end style
Therefore Marked Price of electric Iron is Rs. 750.
Answered by Yasmeen Khan | 17 Sep, 2018, 01:59: PM
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