A person buys 5 tables and 9 chairs for ₹15,400. He sells the tables at 10% profit and chairs at 20% profit. If his total profit on selling all the tables and chairs is ₹2,080, what is the cost price of 3 chairs?
Answer & explanation
Correct answer: option 1
According to the question,
10% of 15400 = 1540
20% of 15400 = 3080
Using allegation method
1540 3080
2080
1000 : 540
Ratio of cost price of 5 tables and 9 chairs = 1000m : 540m
1000m + 540m = 1540m
1540m = 15400
m = 10
Cost price of 9 chairs = 540 × 10 = 5400
Cost price of 1 chair = 600
∴ Cost price of 3 chairs = 3 × 600 = 1800