Aptitude - Time and Distance - Discussion
Discussion Forum : Time and Distance - General Questions (Q.No. 10)
10.
A car travelling with 
of its actual speed covers 42 km in 1 hr 40 min 48 sec. Find the actual speed of the car.
of its actual speed covers 42 km in 1 hr 40 min 48 sec. Find the actual speed of the car.
Answer: Option
Explanation:
| Time taken = 1 hr 40 min 48 sec = 1 hr 40 | 4 | min = 1 | 51 | hrs = | 126 | hrs. |
| 5 | 75 | 75 |
Let the actual speed be x km/hr.
| Then, | 5 | x x | 126 | = 42 |
| 7 | 75 |
 x = |
 |
42 x 7 x 75 |  |
= 35 km/hr. |
| 5 x 126 |
Discussion:
117 comments Page 8 of 12.
Tarun said:
1 decade ago
If a car travelling with 5/7 of its actual speed. Then 35 kmph is possible?
KUMARI SUPRITA said:
3 years ago
1hr + 40min + 48sec = 1 + (40/60) + (48/60*60).
= 1 + 2/3 + 1/75 = 126/75.
= 1 + 2/3 + 1/75 = 126/75.
(28)
Pradeep said:
7 years ago
How to convert 1 hrs 40 mins 48 sec in 4/7? Please tell me in detail.
Suraj said:
9 years ago
Sir, how to change any fraction in time?
Like
7/5 = _ hour, _min?
Like
7/5 = _ hour, _min?
Anand singh said:
6 years ago
Is there any short cut trick to directly convert second min in hrs.
Vamsi said:
5 years ago
Friends why we multiply with 5/7. Please explain to me in detail.
Mohd younis said:
3 years ago
1hrs 40 min 48sec.
1 + 40/60 + 48/60 * 60 = 42/25 = 1.68 hours.
1 + 40/60 + 48/60 * 60 = 42/25 = 1.68 hours.
(32)
Ruchir said:
10 years ago
I am not able to understand the conversion please explain me.
Nilesh R said:
1 decade ago
Is there any another method to solve this type of problem?
Yogi said:
9 years ago
Because Actual speed is X and actual speed 5/7 so X. 5/7.
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