By selling a mobile phone for rupees 4 , 000 , a person loses 15% . find what amount should he sell it so that he gains 10%?
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We have S.P. = $ 4000 and loss = 15%.
Let c.p = $100
As there is loss % as 15 so s.p = 100 - 15 = $75
Let the c.p of the mobile be $x
Now make proportions as
100/x = 75/4000
Cross multiply
75x = 100 . 4000
75x = 400000
So, x = 400000/75
x = $ 5333.3
Hence the cost price of the mobile is $5333.3
Let c.p = $100
As there is loss % as 15 so s.p = 100 - 15 = $75
Let the c.p of the mobile be $x
Now make proportions as
100/x = 75/4000
Cross multiply
75x = 100 . 4000
75x = 400000
So, x = 400000/75
x = $ 5333.3
Hence the cost price of the mobile is $5333.3
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