Challenger App

No.1 PSC Learning App

1M+ Downloads
ഒരാൾ തന്റെ കൂട്ടുകാരനെ കാണാൻ എറണാകുളത്ത് പോയി, ബസ്സിലാണ് യാത്ര, ശരാശരി 30 കി.മീ.മണിക്കുർ വേഗത്തിലായിരുന്നു സഞ്ചരിച്ചത്; തീരിച്ചു വരാൻ ഒരു കാർ കിട്ടി. ശരാശരി വേഗം60 കി.മീ / മണിക്കുർ, മൊത്തം യാത്രയുടെ ശരാശരി വേഗം എത്ര ?

A45 KM/H

B50 KM/H

C40 KM/H

D30 KM/H

Answer:

C. 40 KM/H

Read Explanation:

ശരാശരി വേഗം = 2xy/(x+y) = (2×30×60)/(30+60) =3600/90 =40 km/hr


Related Questions:

Adom's on tour travels first 160 km at 64 km/hr and the next 160 km at 80 km/hr. The average speed for the first 320 km of the tour is?
A bus travelling at 42 km/h completes a journey in 20 hours. At what speed will it have to cover the same distance in 12 hours?
A person can complete a journey in 11 hours. He covers the first one-third part of the journey at the rate of 36 km/h and the remaining distance at the rate of 60 km/h. What is the total distance of his journey (in km)?
In a race, an athlete covers a distance of 372 m in 186 sec in the first lap. He covers the second lap of the same length in 62 sec. What is the average speed (in m/sec) of the athlete?
Three friends are exercising together. The first friend runs a lap in 12 minutes, the second in 18 minutes, and the third in 24 minutes. If they all start running together, after how many minutes will they all finish a lap together again?