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# I travel for three stretches of time, in the ratio 1 : 2 : 3, at speed

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Manager
Joined: 29 Nov 2018
Posts: 193
Concentration: Marketing, Strategy
I travel for three stretches of time, in the ratio 1 : 2 : 3, at speed  [#permalink]

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19 Apr 2019, 10:35
3
00:00

Difficulty:

35% (medium)

Question Stats:

76% (02:15) correct 24% (01:51) wrong based on 17 sessions

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I travel for three stretches of time, in the ratio 1 : 2 : 3, at speeds of 20 kmph, 30 kmph and 40 kmph. If cover a total distance of 100 km, find the total time for which I am travelling.

1. 1 hour
2. 1.5 hours
3. 2 hours
4. 3 hours
5. 6 hours
Intern
Joined: 11 Apr 2019
Posts: 12
Re: I travel for three stretches of time, in the ratio 1 : 2 : 3, at speed  [#permalink]

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19 Apr 2019, 12:58
1
1x(20) + 2x(30) + 3x(40) = 100
20x + 60x + 120x = 100
200x = 100
x = 0.5

1*0.5 + 2*0.5 + 3*0.5 = 0.5 + 1 + 1.5 = 3
Ans: D
Re: I travel for three stretches of time, in the ratio 1 : 2 : 3, at speed   [#permalink] 19 Apr 2019, 12:58
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# I travel for three stretches of time, in the ratio 1 : 2 : 3, at speed

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