Subject
Quantitative Aptitude
Topic
Average
One fourth of a journey is covered at the rate of 50 km/h, one third at the rate of 60 km/h and the rest at the rate of 100km/h. Find the average speed for the whole journey.
One fourth of a journey is covered at the rate of 50 km/h, one third at the rate of 60 km/h and the rest at the rate of 100km/h. Find the average speed for the whole journey.
ক)
\(\;\frac{{1800}}{{63}}\;km/h\)খ)
\(\;\frac{{1800}}{{53}}\;km/h\)গ)
\(\frac{{3600}}{{53}}\;km/h\)ঘ)
\(\;\frac{{360}}{{53}}\;km/h\)ঙ)
None of theseExplanation
Let, the total distance travelled by train be ‘x’ km. ⇒ Time taken to travel one fourth part ⇒ Time taken to travel one third part ⇒ Time taken to travel rest part (5/12) ∴ Total time taken in the journey = Average speed of the whole journey = total distance/total timeRelated questions
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