Question
A cheetah can catch a deer running with a speed of 144
km/h and is 50 meters ahead of it, in 10 seconds. Find the time taken by the cheetah to catch a zebra that is 170 metres ahead of it and is running with a speed which is 70% of that of the deer.Solution
Speed of the deer = 144 km/h = 144 × (5/18) = 40 m/s Distance covered by the cheetah in 10 seconds = 50 metres + distance covered by the deer in 10 seconds = 50 + 40 × 10 = 50 + 400 = 450 metres So, speed of the cheetah = 450/10 = 45 m/s Speed of the zebra = 35 × (80/100) = 28 m/s So, relative speed of the cheetah with respect to the zebra = 45 – 28 = 17 m/s Hence, time taken by the cheetah to catch the zebra = 170/17 = 10 seconds
Choose the correct word that can replace the given phrase.
a person who is indifferent or apathetic towards emotions or feelings
A. New and rapidly developing technological advances made our lives easier.
B. With the creation of weapons that could kill a large number of ...
Find the correct meaning of highlighted word/phrase.
My friend conceals nothing from me.
Find the appropriate Phrasal verb.
The thief _________ with the ornaments.Â
The effects of the drug will soon disappear .
Their work will __________, but they ought to try to improve it.
Find the appropriate Phrasal verb.
I cannot ________ the meaning of this verse.
Phrasal verbs are highlighted in bold in the below-given sentences. Mark the option that best describes its meaning.
The chef decided to whip u...
Fill in the Blank with appropriate Phrasal verb:
Could you ________ the music while I'm on the phone?Â
I. The news media industry, which invests in journalists, has struggled to stay afloat.
II. The big tech platforms have become more and more p...
