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John walk at the speed of 15 km/hr to cover a distance
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Updated on: 08 Mar 2021, 02:24
Updated on: 08 Mar 2021, 02:24
1
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Question Stats:
75% (02:30) correct
25% (02:31) wrong based on 4 sessions
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John walk at the speed of 15 km/hr to cover a distance of 300m. By what % should he increase or decrease his speed to cover the same distance in 6 minutes.
A: 70% Decrease
B: 70% Increase
C: 75% Increase
D: 75% Decrease
E: 80% Decrease
A: 70% Decrease
B: 70% Increase
C: 75% Increase
D: 75% Decrease
E: 80% Decrease
Originally posted by kvarunkumar1975 on 07 Mar 2021, 19:37.
Last edited by Carcass on 08 Mar 2021, 02:24, edited 1 time in total.
Last edited by Carcass on 08 Mar 2021, 02:24, edited 1 time in total.
Edited by Carcass
Re: John walk at the speed of 15 km/hr to cover a distance
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07 Mar 2021, 19:46
07 Mar 2021, 19:46
2
300m in 6 min == 3000m in 60 min = 3km/hr
15-3 = 12 km/hr decrease.
%decrease = 12/15*100 = 80% decrease
15-3 = 12 km/hr decrease.
%decrease = 12/15*100 = 80% decrease
Re: John walk at the speed of 15 km/hr to cover a distance
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08 Mar 2021, 02:25
08 Mar 2021, 02:25
Expert Reply
kvarunkumar1975 wrote:
John walk at the speed of 15 km/hr to cover a distance of 300m. By what % should he increase or decrease his speed to cover the same distance in 6 minutes.
A: 70% Decrease
B: 70% Increase
C: 75% Increase
D: 75% Decrease
E: 80% Decrease
A: 70% Decrease
B: 70% Increase
C: 75% Increase
D: 75% Decrease
E: 80% Decrease
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