a shopskeeper sells on articles Rs 300 thus earning a profit of 20%. find the cost price of the articles.
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S.P of the articles = Rs.300
Profit %=20%
S.P=C.P+P %OF C.P
300=C.P+20*C.P
300 =C.P+20 *C.P
___ __
100 1
300=100C.P+20C.P
____ ____
100 100
300=120C.P
_____
100
300*100=120C.P
30000=120C.P
30000=C.P
______
120
250=C.P
Profit %=20%
S.P=C.P+P %OF C.P
300=C.P+20*C.P
300 =C.P+20 *C.P
___ __
100 1
300=100C.P+20C.P
____ ____
100 100
300=120C.P
_____
100
300*100=120C.P
30000=120C.P
30000=C.P
______
120
250=C.P
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