A tradesman, by means of a false balance, defrauds 10% in buying goods and 10% in selling. What % does he gain on his outlay by his dishonesty if he professes to sell the goods at cost price?
Explanation:
Let the CP for tradesman be Rs. 1/gm
Since he defrauds 10%, he will get 110 gms for every 100 gms he pays for.
∴ He buys 110 gms for Rs. 100.
While selling, he gives only 90 gms for every 100 gms.
So, the tradesman will give 110 gms for 110 × 100/90 = Rs. 122.22
∴ Profit % = 22.22%
Hence, option (d).
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