Aptitude - Time and Distance - Discussion
Discussion Forum : Time and Distance - General Questions (Q.No. 14)
14.
A farmer travelled a distance of 61 km in 9 hours. He travelled partly on foot @ 4 km/hr and partly on bicycle @ 9 km/hr. The distance travelled on foot is:
Answer: Option
Explanation:
Let the distance travelled on foot be x km.
Then, distance travelled on bicycle = (61 -x) km.
| So, | x | + | (61 -x) | = 9 |
| 4 | 9 |
9x + 4(61 -x) = 9 x 36
5x = 80
x = 16 km.
Discussion:
37 comments Page 2 of 4.
Anji said:
1 decade ago
Distance travelled on bicycle = (61 - x) km.
How it is explain please?
How it is explain please?
Jarman said:
1 decade ago
Total distance =61 km.
Let distance travelled by foot = x.
Let distance travelled by bicycle = y.
So, x+y = 61.
Also from above equation.
y = 61-x.
Let distance travelled by foot = x.
Let distance travelled by bicycle = y.
So, x+y = 61.
Also from above equation.
y = 61-x.
Dhivagar said:
1 decade ago
Hi, its simple,
Total distance = 61 km.
Time taken = 9 hr.
Speed by foot = 4 km/hr.
Speed by bicycle = 9 km/hr.
So split the total hours into 2 parts like 4 hr + 5 hr = 9 hrs.
Multiply it with the speed by foot and bicycle like.
4 hr*4 km/hr = 16 km.
5 hr*9 km/hr = 45 km.
Add 16 + 45 = 61 km (total distance covered).
They asked distance covered by foot. So answer is 16. :).
Total distance = 61 km.
Time taken = 9 hr.
Speed by foot = 4 km/hr.
Speed by bicycle = 9 km/hr.
So split the total hours into 2 parts like 4 hr + 5 hr = 9 hrs.
Multiply it with the speed by foot and bicycle like.
4 hr*4 km/hr = 16 km.
5 hr*9 km/hr = 45 km.
Add 16 + 45 = 61 km (total distance covered).
They asked distance covered by foot. So answer is 16. :).
(1)
Suchitra said:
1 decade ago
@Dhivagar.
What if I take 5 hr for bicycle and 4 hr for foot. The answer will be 20 right?
What if I take 5 hr for bicycle and 4 hr for foot. The answer will be 20 right?
Mohit said:
1 decade ago
Please someone tell why the answer is not coming by allegation? I used foot on left 4 9.
6.7.
2.3 2.7.
= 61*23/27?
Why can't we solve like this?
6.7.
2.3 2.7.
= 61*23/27?
Why can't we solve like this?
Manoj Singh said:
10 years ago
Then, 2(4)(9)/4+9=4.
How it's please explain? We get 5.53.
How it's please explain? We get 5.53.
Harsha said:
9 years ago
How comes (61- x) for a bicycle?
Sidzwozz said:
9 years ago
You answered very well, simple, efficient and quick. @Dihvagar.
@Suchitra.
Yes you are right but There is no option saying 20. You have to first check your options because that's where we will find out our mistakes in calculation.
@Suchitra.
Yes you are right but There is no option saying 20. You have to first check your options because that's where we will find out our mistakes in calculation.
Sidharth.j said:
9 years ago
Please someone helps me, they have asked only for bare foot then why are we considering the bicycle also?
v = d/t:
we know the time for the full trip (i.e) 9 hours.
He walks bare foot at speed of 4kmph;
why can't we just multiply and find the answer?
d = v * t;
d = 9 * 4.
d = 36km.
v = d/t:
we know the time for the full trip (i.e) 9 hours.
He walks bare foot at speed of 4kmph;
why can't we just multiply and find the answer?
d = v * t;
d = 9 * 4.
d = 36km.
Sani ahire, roshan ahire said:
8 years ago
Total distance D = 61
4km/hr for 4 hr = 16
9km/hr for 5 hr = 45
Adding 45+16=61.
Hence answer =16.
4km/hr for 4 hr = 16
9km/hr for 5 hr = 45
Adding 45+16=61.
Hence answer =16.
(2)
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