a shopkeeper allows a discount of 10% to his customer and still gains 20% find the marked price of the article which costs ₹450.
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Step-by-step explanation:
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Step-by-step explanation:
CP = Rs. 450
p% = 20%
p= p% × cp / 100
p = 20 × 450/100
p = Rs. 90
sp = cp + p
sp = 450 + 90
sp = Rs. 540
D% = 10%
Mp = (100×sp) / (100 -D%)
= (100×540) / (100-10)
= (100×540) / (100-10)
= 100 ×540 / 90
=Rs. 600
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