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1. A retailer increase the selling price by 25% due to which his profit percentage increase from 20% to 25%. What is the percentage increase in cost price ?
120 (SP) --- 25%↑ → 150 (New SP)
Let x be the new Cost price
Selling Price = 150
x × 1.25 = 150
x = 120
% change = = 20%
Solution:
100 (Initial CP) --- 20%↑ (initial profit) → 120(SP)120 (SP) --- 25%↑ → 150 (New SP)
Let x be the new Cost price
Selling Price = 150
x × 1.25 = 150
x = 120
% change = = 20%