Question

The shopkeeper buys speaker in bulk. The cost of 12 speakers is Rs. 3000. If the 2 speaker is defective and he sells one speaker at Rs. 350. The profit earned by the shopkeeper in selling all the speaker.
1. Rs. 600
2. Rs. 500
3. Rs. 550 
4. Rs. 450

Answer 1

Correct Answer - Option 2 : Rs. 500

Given:

The cost of 12 speakers is Rs. 3000

Sells one speaker at Rs. 350

2 speakers defective

Formula used:

Profit = Selling price - Cost price

Calculation:

The cost of 12 speakers is Rs. 3000

Number of good speaker = 12 - 2 = 10

The selling price of the 10 speaker = 10 × 350 = Rs. 3500

Profit = Rs. 3500 - Rs. 3000 = Rs. 500

∴ The profit earned by the shopkeeper is Rs. 500