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(#M40157030) BANK TEST Numerical Ability question Speed Keep an EYE

Driver of an ambulance sees a school bus 60km ahead of him.After 30sec the school bus is 90kmbehind.If the speed of the ambulance is 38kmph,then What is the speed of school bus?

Asked In Bank test GAYATHRI MOHAN (7 years ago)

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Read Solution (1) :

pondugulakavya  (7 years ago)

total distance =60+90=150
relative speed=total distance /time
=150/30
=5*18/5=18kmph
Relative Speed = (speed of ambulance - speed of school bus)
Speed of school bus = speed of ambulance - relative speed.
= 38kmph-18kmph=20kmph

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