The speed of boat during the climbing against the flow is 20 km/h and speed of flow is 7 km/hr. The speed of flow in downstream is ……. km/h.

The speed of boat during the climbing against the flow is 20 km/h and speed of flow is 7 km/hr. The speed of flow in downstream is ……. km/h.

1). 13
2). 34
3). 27
4). None of these

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