Question
Speed of a boat in still water is three times the speed
of the boat in upstream. If the boat takes 30 minutes to cover 27 km in downstream, then find the speed of the boat in still water.Solution
Let speed of the boat in still water be ‘3x’ km/h. Speed of the boat in upstream = 3x ÷ 3 = ‘x’ km/h Speed of the stream = 3x – x = ‘2x’ km/h Speed of the boat in downstream = 3x + 2x = ‘5x’ km/h ATQ; (27/30) × 60 = 54 So, 5x = 54 Or, x = 10.8 So, speed of the boat in still water = 3 × 10.8 = 32.4 km/h
India is world's _____________ largest producer of fruits and vegetables.
When the production of both inter crops is equal to that of its solid planting, it is known asÂ
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Blue colour tag for which category of seed under seed production/generation system?
Rice contains __% protein. Rice protein is known as ___
Select the most appropriate ANTONYM of the given word.
AUTHENTIC
Which of the following can result in heterosis?
Which organization developed the "Rangeen Machhli" app?
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