Aptitude - Time and Distance - Discussion
Discussion Forum : Time and Distance - General Questions (Q.No. 11)
11.
In covering a distance of 30 km, Abhay takes 2 hours more than Sameer. If Abhay doubles his speed, then he would take 1 hour less than Sameer. Abhay's speed is:
Answer: Option
Explanation:
Let Abhay's speed be x km/hr.
| Then, | 30 | - | 30 | = 3 |
| x | 2x |
6x = 30
x = 5 km/hr.
Discussion:
209 comments Page 12 of 21.
Varun said:
1 decade ago
Reason for subtracting: Then only you're getting the difference in time of both.
Anitha said:
1 decade ago
30/x-30/2x=3
=> 30/x-15/x=3
=> 15/x=3
=> 15=3x
=> 15/3=x
=> 5=x
=> 30/x-15/x=3
=> 15/x=3
=> 15=3x
=> 15/3=x
=> 5=x
(1)
Navin said:
4 years ago
s = d/t.
x=30/60,
= 2.
Therefore : 2 + 2 {dbl spd} + 1 {1 hour less} = 5.
x=30/60,
= 2.
Therefore : 2 + 2 {dbl spd} + 1 {1 hour less} = 5.
(3)
Reshma rgukt said:
8 years ago
@Devi.
Your explanation was very good. I understood very well. Thanks.
Your explanation was very good. I understood very well. Thanks.
Shonti said:
6 years ago
(30/Sa-30/Ss) = 2.
(30/2Sa-30/Ss) = -1.
30/Sa - 2 = 30/2Sa +1.
Sa = 5.
(30/2Sa-30/Ss) = -1.
30/Sa - 2 = 30/2Sa +1.
Sa = 5.
Rohit said:
5 years ago
By applying direct formulation speed - distance /time.
30/3 * 2,
= 5.
30/3 * 2,
= 5.
(1)
Rutuja said:
9 years ago
I still not understand how 3 came? Explain in a simple manner please.
Arun said:
2 decades ago
How that 6x came. Please can You explain. I Don't know That method.
Anu said:
2 decades ago
Take L.C.M arun ji.... u can understand from whr do 6x came...!!!!
(1)
Rashika said:
9 years ago
If it is asked about Sameer's speed then what would be the answer?
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