After allowing a discount of 12% on the marked price, a shopkeeper still gains 21%. By what percent is the marked price above cost price?
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37.5 %
Step-by-step explanation:
Let Cost price = x
Market price = y
ATQ,
Shopkeeper making 12% discount on marked price and gains 21% on cost price.
so, y - 12/100 y = x + 21/100 x
0.88 y = 1.21 x
y = 1.375 x
difference y - x = 1.375 x - x
= 0.375x
% = 0.375x/x × 100
= 37.5%
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