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Numerical Ability
Time Distance and Speed
If a person walks at 15 km/hr instead of 12 km/hr, he would have walked 30 km more. The actual distance travelled by him is: A) 180 km B) 150 km C) 120 km D) 90 km
Read Solution (Total 6)
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- 15x-12x=30
x=10
Actual distance =12km*10 - 5 years agoHelpfull: Yes(6) No(0)
- let dist= x km
x/12 = x+30/15
x= 120 km - 5 years agoHelpfull: Yes(4) No(0)
- Let actual distance be x
Here, time is constant(i.e.T1=T2)
D1/D2=S1/S2
(x+30)/x=15/12
12x+360=15x
3x=360
x=120 - 5 years agoHelpfull: Yes(2) No(0)
- Let the actual distance travelled be x
so the equation would be
x/12=x+30/15
solving above equation(cross multiplication) we get,
15x=12x+360
3x=360
x=120. - 5 years agoHelpfull: Yes(1) No(0)
- Let total time be t hr
u1 = 15 km/hr u2 = 12 km/hr
d1 = 15*t km d2 = 12*t km
Then, d1-d2 = 30
=> 15t - 12t = 30
=> 3t = 30
=> t = 10
So, Total distance = 10 * 12= 120 - 5 years agoHelpfull: Yes(0) No(0)
- Let d be distance and t be time
d=12t
d+30=15t
Equate for d. 12t +30 =15t
t=10
12x10=120 - 5 years agoHelpfull: Yes(0) No(0)
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