The table given below shows the number of spoon manufactured by five factories.
| Factory | Spoon |
| P | 100 |
| Q | 200 |
| R | 150 |
| S | 50 |
| T | 250 |
What are the ratio of number of spoon manufactured by P to the number of spoon manufactured by R?
1
3 : 2
2
2 : 3
3
14 : 1
4
1 : 3