Aptitude - Time and Distance - Discussion
Discussion Forum : Time and Distance - General Questions (Q.No. 13)
13.
It takes eight hours for a 600 km journey, if 120 km is done by train and the rest by car. It takes 20 minutes more, if 200 km is done by train and the rest by car. The ratio of the speed of the train to that of the cars is:
Answer: Option
Explanation:
Let the speed of the train be x km/hr and that of the car be y km/hr.
| Then, | 120 | + | 480 | = 8  |
1 | + | 4 | = | 1 | ....(i) |
| x | y | x | y | 15 |
| And, | 200 | + | 400 | = | 25 | |
1 | + | 2 | = | 1 | ....(ii) |
| x | y | 3 | x | y | 24 |
Solving (i) and (ii), we get: x = 60 and y = 80.
Ratio of speeds = 60 : 80 = 3 : 4.
Discussion:
84 comments Page 7 of 9.
Ria said:
11 months ago
How did 8 come in solution?
Please explain me.
Please explain me.
(11)
Deep said:
9 years ago
Can anyone explain it properly how we got 1/24?
Karan said:
4 years ago
How that 200 and 400 comes? Please explain me.
(2)
Asmita said:
5 years ago
How to slove eq1 and 2? please anyone explain.
(1)
Bharatesh said:
1 decade ago
Please tell me how did you get the X value?
Kishore said:
1 decade ago
Hello sir, how did come 1/15 at 1st step ?
Kamal said:
1 decade ago
Please explain how 1/15 and 1/24 comes ?
Sushil said:
7 years ago
Very good explanation, Thanks @Kavitha.
(1)
Santosh said:
1 decade ago
Please any one explain how 1/24 comes?
Gopikrishna said:
9 years ago
How you get 1/15?
Please answer me.
Please answer me.
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