Postal Government Jobs Exams 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

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Postal Other Question

A motorcycle is twice as fast as a car and car is thrice as fast as scooter. The journey covered by scooter in 54 minutes will be covered by a motorcycle in?

(a)8 minutes
(b)12 minutes
(c)9 minutes
(d)none of these
A vendor sells lemon at the rate of 5 for Rs.14 gaining thereby 40%.For how much did he by a dozen lemon?

(a)Rs.20
(b)Rs.22
(c)Rs.24
(d)none of these