Question
The speed of a boat in still water is twice the speed of
the current. If the boat takes 10 hours to cover 150 km upstream, then find the time taken by the boat to cover 300 km downstream.Solution
Let the speed of the current be ‘x’ km/hr
Therefore, speed of the boat in still water = 2x km/hr
According to the question,
2x – x = 150 / 10
Or, x = 15 km/hr
Required time taken = 300 / (2x + x) = 300 / (3 × 15) = 300/45 = 6 hours
Each of the letters in the word ‘ADMIT’ is arranged in alphabetical order. How many letters are these in the English alphabetical series between the...
Two statements are given, followed by three conclusions. Assuming the statements to be true, even if they seem to be at variance with commonly known fac...
A series is given with one term missing. Select the correct alternative from the given ones that will complete the series.
ABCD, HGLO, OLUZ, VQ...
In the following question, select the missing number from the given series.
27, 46, 65, ?, 103
Select the pair which follows the same pattern as that followed by the two set of pairs given below. Both pairs follow the same pattern.
DFG: IKL...
What day of the week was on 28th January 2002?
Two statements are given followed by three conclusions numbered I, II and III. Assuming the statements to be true, even if they seem to be at variance w...
Select the set in which the numbers are related in the same way as are the numbers of the following sets.
(NOTE : Operations should be performed ...
Select the option that is related to the third term in the same way as the second term is related to the first term.
Kilogram : Mass :: Kilometre...
To reach point B from point A, Anita must walk 70 m towards the west, then she must take a right turn and walk 70 m, then she must take a left turn and ...
Relevant for Exams:
