| [ A ] 9 : 10 |
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| [ B ] 20 : 13 | |
| [ C ] 13 : 10 | |
| [ D ] 10 : 9 |
| [ A ] 9 : 10 |
![]() |
| [ B ] 20 : 13 | |
| [ C ] 13 : 10 | |
| [ D ] 10 : 9 |
| Answer : Option A |
| Explanation : |
| Required ratio = 900 : 1000 = 9 : 10 |
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