The price of gold is directly proportional to the square of its weight. It being sold after breaking in the ratio of 3 : 2 : 5 therefore earned a loss of ₹1240. The price of gold before breaking is
Answer & explanation
Correct answer: option 3
Price of gold = ( weight of gold)2
I : II : III : Actual
weight ⇒ 3 : 2 : 5 : 10
Price ⇒ 32 : 22 : 52 : 102
⇒ 9 : 4 : 25 : 100
Now,
Actual Price = 100
Price after break = (9 + 4 + 25) = 38
Loss = 100 - 38 = 62R
⇒ 62R = 1240 (given)
⇒ 1R = 20
Hence,
Actual Price = 100 × 20 = 2000/-