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 10 of 12.
Zabi said:
1 decade ago
How is 40 4/5 is converted to 51/75?
Kushal said:
5 years ago
5/7 of its actual speed, that's why.
Maruti said:
7 years ago
Thanks for the solution @Siddharth.
Sai said:
1 decade ago
Why should we multiply with 5/7?
Some people said:
3 years ago
How come 126? Please explain.
(11)
Sali said:
1 decade ago
How 1hr 40min 48sec=1 51/75
Hussain said:
1 decade ago
Thanks to Sidd and Abhishe.
Dilip said:
1 decade ago
Wy to multiply 5/7 with 25?
Rani said:
10 years ago
How we got 42 as distance?
Akshaya said:
9 years ago
Why we multiply by 5/7?
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