A bus travels at 100km/h for the first 1/2 hour. Later it travels at 80km/h. Find the time taken by the bus to travel 290 km.
Answer & explanation
Correct answer: option 2
Distance= speed × time
Distance traveled in first 1/2 hours
= 100 × \(\frac{1}{2}\) = 50 km
Remaining distance= 290 - 50 = 240 km
Time taken to travel remaining distance at 80 km/h
= \(\frac{240}{80}\)
= 3 hours
Total time to travel 290 km = ( \(\frac{1}{2}\) + 3 )hours
= 3.5 hours
Hence, Total time taken to travel 290 km is 3.5 hours.