25. An article is sold at 12% gain. If it had been sold for Rs 2400 more, the gain
would have been 20%. Find the cost price of the article.
With explanation steps
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Step-by-step explanation:
formula : %gain= gain/cost price *100
12%= y/x*100
12x=100y ........ eq^n 1st
from question:
20%= (y+2400) /x*100
20x= 100y+2,40,000
from eq^n 1st
20x=12x +2,40,000
8x=2,40,000
x=30,000
x=cost price
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