A shopkeeper does a faulty weighing of an item of 930 gram instead of 1 kg and sells it at its cost price. Find his profit percentage on selling 15 kg of the item.
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Correct answer: C
Explanation
The correct answer is option 3 i.e. 7%.
Actual weight = 1000 g
Given weight = 930 g
On every kg, shopkeeper gives only 930 g ⇒ keeps (1000 − 930) = 70 g as gain.
On selling 15 kg (according to faulty scale), actual quantity given =
15 × 930 g = 13,950 g = 13 kg 950 g
So, profit = (15 kg − 13 kg 950 g) = 1 kg 50 g
= 1050 g
Now, profit % = (1050 / 13,950) × 100
= (1050 ÷ 13950) × 100
= (7 ÷ 93) × 100
= 700 / 93
= 7 (49/93) %