Answer:
The dealer's profit percentage is 7.692%
Explanation:
18 × 65 = 1170
He spent Rs.1170
12 × 75 = 900
60 × (18-12) = 360
900 + 360 = 1260
He got a profit of Rs.90.
1170 × (1 + x/100) = 1260
1 + x/100 = 14/13
x/100 = 1/13
x= 7.692307692
7.7%
spent= Rs. 65*18= Rs. 1170
earned= 12*Rs. 75+6*Rs. 60= Rs. 1260
profit= Rs. 1260- Rs. 1170= Rs. 90
profit %= 90/1170*100%= 7.7%
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