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A shopkeeper sells an article at a loss of (25 / 2) %. Had he sold it for $ 51.80 more, he would have earned a profit of 6%. The cost price of the article is
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- $ 280
- $ 300
- $ 380
- $ 400
Correct Option: A
Let the C.P. of article be $ y.
| ∴ S.P. = | 200 |
| New S.P. = $ |  | 7y | + 51.80 |  | ||
| 8 |
| ∴ | + 51.8 = | × y | 200 | 100 |
| ⇒ | - | = 51.8 | 100 | 200 |
| ⇒ | = 51.8 | 200 |
⇒ 37 y = 51.8 × 200
| ⇒ y = | = $ 280 | 37 |
We can find required answer with the help of given formula :
Here, a = 12.5% , R = $ 51.80 , b = 6%
| C.P. = | b + a |
| C.P. = | 12.5 + 6 |
| C.P. = | = $ 280 | 18.5 |
