The table given below shows the cost price and selling price of 5 different articles.
| Article | Cost price | Selling price |
| A1 | 350 | 450 |
| A2 | 550 | 550 |
| A3 | 450 | 650 |
| A4 | 250 | 550 |
| A5 | 150 | 650 |
What is the ratio of cost price of A1 to the selling price of A4?
Answer & explanation
Correct answer: option 4
Ratio of cost price of A1 to the selling price of A4
= 350 : 550
= 7 : 11