Aptitude - Boats and Streams - Discussion
Discussion Forum : Boats and Streams - General Questions (Q.No. 3)
3.
A boat running upstream takes 8 hours 48 minutes to cover a certain distance, while it takes 4 hours to cover the same distance running downstream. What is the ratio between the speed of the boat and speed of the water current respectively?
Answer: Option
Explanation:
Let the man's rate upstream be x kmph and that downstream be y kmph.
Then, distance covered upstream in 8 hrs 48 min = Distance covered downstream in 4 hrs.
 |
 |
x x 8 | 4 |  |
= (y x 4) |
| 5 |
| |
44 | x =4y |
| 5 |
| y = |
11 | x. |
| 5 |
 Required ratio = |
|
y + x | |
: | |
y - x | |
| 2 | 2 |
| = | |
16x | x | 1 | |
: | |
6x | x | 1 | |
| 5 | 2 | 5 | 2 |
| = | 8 | : | 3 |
| 5 | 5 |
= 8 : 3.
Discussion:
109 comments Page 8 of 11.
Gita said:
1 decade ago
I'm not able understand the ratio?can you give brief explanation.
Sucharitha said:
6 years ago
8+4/5:4.
44:20.
Speed of the boat=64.
Water speed=24.
64:24.
8:3.
44:20.
Speed of the boat=64.
Water speed=24.
64:24.
8:3.
(1)
RAMJAN said:
7 years ago
I got the value of x+y/2 =13x4 instead of 16x/10.
Am I correct?
Am I correct?
Anbu said:
1 decade ago
@Bindu.
Your answer is suitable for all this type of problems?
Your answer is suitable for all this type of problems?
Bharath said:
1 decade ago
Given is 8 hr 48min so converting min to hr
We have 48/60=4/5
We have 48/60=4/5
Anbu said:
1 decade ago
Bindu your answer is suitable for all this type of problems?
Raju said:
1 decade ago
I want to know how these equation is done?
16x/5 and 6x/5.
16x/5 and 6x/5.
Ramya said:
8 years ago
Could you please explain 2nd part of the answer (ratio) ?
Hema said:
1 decade ago
I'm not understand this step 16/5*1/2 please help me.
Prahadee said:
1 decade ago
I don't understand the ratio. Can anyone explain me?
Post your comments here:
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers