Question
A ship covers 96 km upstream and 144 km downstream in 8
hours and 6 hours, respectively. Find the time taken by the same ship to cover 180 km in still water.Solution
ATQ, Let speed of the ship in still water be ‘x’ km/h and speed of the stream be ‘y’ km/h Upstream speed of ship = (x – y) = (96/8) = 12 km/h --------- (I) Downstream speed of ship = (x + y) = (144/6) = 24 km/h ---------- (II) On adding equation (I) and equation (II), we have: 2x = 36 Or, x = 18 So, speed of the ship in still water = 18 km/h Therefore, time taken by the ship to cover 180 km in still water = (180/18) = 10 hours
The Foreign Ministers will put their _____ together to prepare a draft _________ to be adopted at the summitÂ
Fill in the blanks with appropriate words from the alternatives given below each sentence.
____inside a bus is prohibitedÂ
The two boys ____each other for the first place.
Not only the CEO but also the employees …….. supporting the introduction of a new product.
Sentences are given below with a blank. Fill in these blanks with the appropriate option.
The young boy's __________ smile brightened up the ro...
Henry Ford was a pioneer during the________ (later) days/years of car manufacture.
Select the most appropriate idiom in the given context to fill in the sentence.
During the staff meeting there was a lot of ruckus since many ...
Fill in the blank with most appropriate word from the given options.
She was scolded ____ arriving late to the meeting.
Ramesh needs to go into a deep ___________ in order to chalk out a fruitful plan for the future.
   (A) discussion            ...
A perception among the country’s youth that the national government is __________ down on democratic expression could only strain the already delicate...
