A dealer gains 7% by selling a mobile phone set for ₹3852, find his gain per cent if he sell it for 4050
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let CP of the mobile be x
Then
x+7%of x=3852
x+7/100x =3852
now take lcm
100x+7x=3852×100
107x=385200
x=385200÷107
x=3600
if so is 4050
then
profit =4050-3600
profit= 450
gain % = profit÷cp×100
gain%=450÷3600×100
gain%= 12.5%
Then
x+7%of x=3852
x+7/100x =3852
now take lcm
100x+7x=3852×100
107x=385200
x=385200÷107
x=3600
if so is 4050
then
profit =4050-3600
profit= 450
gain % = profit÷cp×100
gain%=450÷3600×100
gain%= 12.5%
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