Postal
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Numerical Ability
Time Distance and Speed
The average speed of a car is 90km/hr. The driver first decreases its average by 40% and then increases it by 50%. What is the new average speed now?
(a)80km/hr
(b)81km/hr
(c)84km/hr
(d)85km/hr
Read Solution (Total 1)
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- (b) 81km/hr
New average speed=90*[(100-40)/100]*[(100+50)/100]=81 - 10 years agoHelpfull: Yes(0) No(0)
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