Question
Speed of current is equal to 20% of speed of boat in
still water. If the boat takes 4 hours to cover 120 km in still water, then find the time taken by the boat to cover 96 km in upstream.Solution
Speed of the boat in still water = 120 ÷ 4 = 30 km/h Speed of current = 30 × 0.20 = 6 km/h Therefore, upstream speed of the boat = 30 – 6 = 24 km/hr Required time taken = 96 ÷ 24 = 4 hours
Study the given pattern carefully and select the number that can replace the question mark (?) from the given alternatives.
Choose the most appropriate antonym of the given word.
RELAXED
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