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The marked price of an article is 50% above cost price. When marked price is increased by 20% and selling price is increased by 20%, the profit doubles. If original marked price is $ 300, then original selling price is
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- $ 200
- $ 250
- $ 240
- $ 275
Correct Option: B
Let the original S.P. be y.
| C.P. of the article = | = $ 200 | 150 |
After corresponding increases
| - 200 = 2 (y - 200) | 100 |
| ⇒ | - 200 = 2y - 400 | 5 |
⇒ 6y – 1000 = 10y – 2000
⇒ 4y = 1000 ⇒ y = $ 250
