A shopkeeper buys 180 articles at Rs 40 each from a wholesaler. He fixes the selling price per article to gain the profit of 45% of the cost price. He sells 2/5 th of the articles at this selling price. He then reduces the selling price per article so that his profit is only 20% of the cost price. Find his total profit if all the articles are sold.
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Answer:
30% gain
Step-by-step explanation:
increase 45% of 40 = 45/100*40
= Rs.58
no.of articles sold at Rs.58 = 2/5 of 180
= 72 articles
amount he got from this = 58*72
= Rs.4176
remaining articles = 180 - 72
= 108 articles
increase 20% of 40 = 20/100*40
= Rs.48
no.of articles sold at Rs.48 = 108
amount he got from this = 48*108
= Rs.5184
total selling price = 5184+4176
= Rs.9360
total cost price = 180*40
= Rs.7200
(100+x)/100*7200 = 9360
100+x = 9360/72
= 130
x = 130-100
x = 30
gain = 30%
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