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A trader gains 15% after selling an item at 10% discount on the printed price. The ratio of the cost price and printed price of the item is
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- 18 : 23
- 17 : 18
- 17 : 23
- 18 : 25
Correct Option: A
Given that , gains = 15% , discount = 10%
Let the CP of article be p and its marked price be q.
According to the question,
90% of q = 115% of p
| ⇒ | = | ||
| 100 | 100 |
| ⇒ | = | = | ⇒18 : 23 | |||
| q | 115 | 23 |
Second method to solve this question :
Here, r = 15%, D = 10%
Using the given formula ,
| = | ||
| C.P. | 100 − D |
| = | ||
| C.P. | 100 − 10 |
| = | ||
| C.P. | 90 |
| = | ||
| M.P. | 115 |
| = | ||
| M.P. | 23 |
⇒ C.P. : M.P. = 18 : 23
