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Distance travelled by the boat while travelling in upstream for 1 hour = 90 × (60/270) = 20 km Distance travelled by the boat while travelling in downstream for 1 hour = 50 × (60/120) = 25 km So, upstream and downstream speed of the boat are 20 km/h and 25 km/h, respectively So, speed of the boat in still water = (20 + 25) ÷ 2 = 22.5 km/h So, distance travelled by the boat travelling in still water for 360 minutes = 22.5 × (360/60) = 135 km
Select the most appropriate synonym of the given word.
Caustic
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LIVELY
Choose the word that means the same as the given word.
Obligation
To take back or withdraw something that has been given or granted
The room was dim and hard to see in.
Select the INCORRECTLY spelt word.
Select the correct Antonym of the given word.
rebuke
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A slowly moving mass or river of ice
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Fright
Discursive
