A dealer sold three-fourths of his articles at a gain of 20 percent and the remaining articles at the cost price. Find the gain earned by him in the whole transaction.
A20%
B18%
C16%
D15% ✓ Correct
Correct answer: (D) 15%
Explanation
The overall gain is 15%.
Take cost of all articles as Rs. 100.
3/4 sold at 20% gain: 75 x 1.20 = 90.
1/4 sold at cost: 25.
Total SP = 115, so gain = 15%.
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