A dishonest dealer professes to sell his goods at C.P, but he cheats by 7% while purchasing and 9% while selling. What percent of profit does he gain?
16.63%
When a dealer cheats by x% while purchasing and y% while selling, the two gains compound just like successive percentage increases.
Overall profit % = \(x + y + \frac{xy}{100}\).
Substitute x = 7 and y = 9: profit % = \(7 + 9 + \frac{7 \times 9}{100} = 16 + 0.63 = 16.63\%\).
Hence, the answer is 16.63%.
A dishonest shopkeeper promises to sell his goods at cost price. However, he uses a weight that actually weighs 20% less than what is written on it. Find his profit percentage.
A trader claims to sell fruits at a profit of 22%, but also dishonestly uses a weight which is 4% less than what is mentioned on it. Find the total percentage of profit earned by the trader. (Round off the answer to the nearest whole number.)