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When fresh fish is dried it loses one-third of its weight. Reshma buys 963 kg of fresh fish at the rate of Rs. 25 per kg. She sells them when dried, at Rs. 108.5 per kg. She earns a profit of:

When fresh fish is dried it loses one-third of its weight. Reshma buys 963 kg of fresh fish at the rate of Rs. 25 per kg. She sells them when dried, at Rs. 108.5 per kg. She earns a profit of: Correct Answer Rs. 45582

Given:

Reshma bought fresh fish = 963 kg

Fresh fish rate per kg = 25 per kg

The selling price of dried fish = 108.5 per kg

Formula required:

Profit = Selling price - cost price 

Calculations:

The Total cost price of fresh fish = 963 × 25

⇒ Rs. 24075

When fresh fish is dried, it becomes two-thirds of its weight. (∵ 1 - 1/3 = 2/3)

Then, the weight of dried fish = 963 × 2/3

⇒ 642 kg

She sold dried fish = Rs. 108.5 per kg

Hence, the selling price of dried fish 903 kg = 642 x 108.5

⇒  Rs. 69657

Profit = 69657 - 24075

⇒  45582

∴ Reshma earned Rs. 45582

Mistake Points1/3rd is the weight loss and 2/3rd is the weight of the fish remains. So the profit is calculated according to the remaining weight of the fish.

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