Question
A cheetah can catch a deer running with a speed of 54
km/h and is 70 meters ahead of it, in 14 seconds. Find the time taken by the cheetah to catch a zebra that is 160 metres ahead of it and is running with a speed which is 80% of that of the deer.Solution
Speed of the deer = 54 km/h = 54 × (5/18) = 15 m/s Distance covered by the cheetah in 14 seconds = 70 metres + distance covered by the deer in 14 seconds = 70 + 15 × 14 = 70 + 210 = 280 metres So, speed of the cheetah = 280/14 = 20 m/s Speed of the zebra = 15 × (80/100) = 12 m/s So, relative speed of the cheetah with respect to the zebra = 20 – 12 = 8 m/s Hence, time taken by the cheetah to catch the zebra = 160/8 = 20 seconds
Identify the figure given in the options that when put in place of the question mark (?) will logically complete the series.
In a row of boys, if Akhil who is 13th from the left, and Firoz who is 6th from the right end interchange their positions, Akhil becomes 23rd from the l...
Statements:
All valleys are mountains.
No sea is a mountain.
Some plains are seas.
Conclusions:
I. Some valleys a...
W, X, Y and Z are distinct individuals. W is the daughter of X. X is the son of Y. Y is the father of Z. Which of the following statement is definitely ...
Select the figure that will replace the question mark (?) in the following figure series.
In the following mumber-pairs, the second number is obtained by applying certain mathematical operations to the first mimber Select the set in which the...
MASTER : TSAMRE :: SMILES : LIMSSE :: FLIMSY : ?
How straight lines are there in the given picture?
In a certain code language, ‘WE’ is written as ‘14’, ‘OUT’ is written as ‘28’. What is the code for ‘WAR’ in that code language?
If in a code language, 'WICE' is written as 'DRXV', then how will 'ROPE' be written in the same code language?
