The difference between the selling prices of some articles, if sold for Rs.12 per article instead of Rs.9 per article, is Rs.150. If the cost price of these articles is Rs.250, then find the selling price of 21 articles if profit earned is 20%.
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e Rs.126.
| Understanding/Application |
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Let the number of articles is x which is sold at 12 rs per article and 9 rupees per article. Selling price at Rs 12 per article - Selling price at Rs 9 per article = 12x - 9x = 150 3x = 150 x =50 Total cost price of x article is 250 rupees Cost price of one article = Total cost price / Number of articles = Rs 250/50 = 5 Rs per article. Selling price of one article at 20% profit = 5 rs + 20% of 5 rupees = 5 + (20/100) x 5 = 6 rupees per article Selling price of 21 articles = 21 x 6 = 126 |