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:
38 comments Page 4 of 4.
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?
Kawla said:
9 years ago
How can 5x=80? just explain it.
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?
JPriya said:
9 years ago
Partly means is it not (x/2 )/4+(x/2)/9=9 if d is taken as the total distance?
Please tell me.
Please tell me.
Mohanapriyasavithri said:
9 years ago
This can be solved easily by the rule of alligation.
Take average speed as 61÷9 (speed formula is ditance÷time).
Take the dearer value cheaper value & apply alligation rule.
Take average speed as 61÷9 (speed formula is ditance÷time).
Take the dearer value cheaper value & apply alligation rule.
Manoj Singh said:
1 decade 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.
Sidharth.j said:
10 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.
Sidzwozz said:
10 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.
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