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 Ă (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 Ă 10 = 50 + 400 = 450 metres So, speed of the cheetah = 450/10 = 45 m/s Speed of the zebra = 35 Ă (80/100) = 28 m/s So, relative speed of the cheetah with respect to the zebra = 45 â 28 = 17 m/s Hence, time taken by the cheetah to catch the zebra = 170/17 = 10 seconds
In a certain code language, âPAINTâ is written as â16191420â and âDEAFâ is written as â4516â. What will be the code for âJOKERâ in t...
Select the correct mirror image of the given figure when the mirror is placed at the line MN as shown.
Which of the following code for âillegalâ?
In a certain code language, 'STATUE' is coded as 'VRDRXC' and 'CASHEW' is coded as 'FYVFHU'. How will 'MONITOR' be coded as in that language?
Unscramble the following letters to frame a meaningful word, then find out the correct numerical position of the letters:
In a certain code language, â312914â is related to 'CABIN' in the same way â1821191991â is related to which of the following words?
...In a certain code language, âAPPRAISALâ is written as âCRRTCKUCNâ. What will be the code for âCOLLECTORâ in the same code language?
...In a certain code language, âSKETCHâ is written as âTJFSDGâ. What will be the code for âWARMERâ in that code language?Â
...If FOUR is coded as 9999, then DEAD will be coded as
What is the code for the word âitsâ ?
