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If Deepesh had walked 20 km/h faster he woulh have saved 1 hour in the distance of 60km. what is the usual speed of Deepesh?
- A100
- B120
- C150
- DNone of these
Correct answer: A
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0
CCommunity
100
NA
NA
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CCommunity
Given: 60km is the total distance,
Fastest speed is 20km/hr
What is the time he needed to cover the distance faster?
20km = 1 hr
60km = ? . . . . (60km x 1hr) / 20km = 3hrs.
Rememeber we are told that he saved 1 hr. So the usual time he will use to cover the 60 kms is 4 hrs ( 1hr saved + 3 hrs used). Now calculate speed. 4 hrs is used to cover 60km . . . 60/4 is 15. 15km/hr is the usual speed.
Fastest speed is 20km/hr
What is the time he needed to cover the distance faster?
20km = 1 hr
60km = ? . . . . (60km x 1hr) / 20km = 3hrs.
Rememeber we are told that he saved 1 hr. So the usual time he will use to cover the 60 kms is 4 hrs ( 1hr saved + 3 hrs used). Now calculate speed. 4 hrs is used to cover 60km . . . 60/4 is 15. 15km/hr is the usual speed.