Question
The speed of a boat in still water is 12 times the speed
of the stream. If the difference between the upstream and downstream speed of the boats is 20 km/hr, then find the time taken by the boat to travel 220 km in upstream.Solution
Let the speed of the stream be ‘x’ km/hr Therefore, speed of the boat in still water = 12x km/hr Upstream speed of the boat = 12x – x = 11x km/hr Downstream speed of the boat = x + 12x = 13x km/hr According to the question, 13x – 11x = 20 => 2x = 20 => x = 10 Therefore, upstream speed of the boat = 11x = 110 km/hr Required time taken = 220/110 = 2 hours
Please share your class notes with me.Â
In the following question a sentence has been given in its active/passive form followed by 5 alternatives. choose the option which is the correct chang...
Select the correct active form of the given sentence.
Let this letter be posted at once.
The sentence has been given in Active/Passive Voice. Change the voice to Passive/Active.
Diksha knows this address
Select the option that expresses the following sentence in passive voice:
They will complete the project by next week.
Select the correct active form of the given sentence.Â
The terrorist was arrested by Mumbai Police.
Grandfather reads the newspaper every day.
The cake was eaten by the children.
The sentence has been given in Active/Passive Voice. Change the voice to Passive/Active.
Sikha was watching tenses
A hot potato
Relevant for Exams:
