Question
Neha takes 4 hours to travel from station 'G' to station
'H' at the speed of 90 km/h. After that, she increases her speed by 30% and takes 2 hours to travel from station 'H' to station 'I'. What is the average speed of Neha while travelling from station 'G' to 'I'?Solution
ATQ,
Distance between station 'G' and station 'H' = 90 × 4 = 360 km
Distance between station 'H' and station 'I' = 90 × 1.3 × 2 = 234 km
Total distance travelled by Neha = 360 + 234 = 594 km
Total time taken by Neha = 4 + 2 = 6 hours
Average speed of Neha = 594 / 6 = 99 km/h
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