Sambhu buys rice at Rs. 10/kg and puts a price tag on it so as to earn a profit of 20%. However, his faulty balance shows 1000 gm when it is actually 800 gm. What is his actual gain percentage ?

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Solution

CP of $1000$ gm $=$ Rs. $10$
SP of $800$ gm $=$ Rs. $12$
SP of $1000$ gm $= 12 \times \frac{1000}{800} =$ Rs. $15$
Now take $1000$ gm as reference to calculate profit.
Profit $=$ SP-CP $= 15 - 10 =$ Rs. $5$
Profit $% = 5 \times \frac{100}{10} = 50 %$

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Sambhu buys rice at Rs. 10/kg and puts a price tag on it so as to earn a profit of 20%. However, his faulty balance shows 1000 gm when it is actually 800 gm. What is his actual gain percentage ?

CP of 1000gm = Rs.10SP of 800gm = Rs.12SP of 1000gm =12×1000800= Rs.15Now take 1000gm as reference to calculate profit.Profit=SP-CP=15−10=Rs.5Profit %=5×10010=50%

CP of $1000$ gm $=$ Rs. $10$
SP of $800$ gm $=$ Rs. $12$
SP of $1000$ gm $= 12 \times \frac{1000}{800} =$ Rs. $15$
Now take $1000$ gm as reference to calculate profit.
Profit $=$ SP-CP $= 15 - 10 =$ Rs. $5$
Profit $% = 5 \times \frac{100}{10} = 50 %$