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Updated on: 02 Oct 2023, 14:15
Originally posted by Sajjad1994 on 30 Oct 2020, 03:12.
Last edited by BottomJee on 02 Oct 2023, 14:15, edited 3 times in total.
Last edited by BottomJee on 02 Oct 2023, 14:15, edited 3 times in total.
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Truck
A: 48 Truck
B: 58
A: 48 Truck
B: 58
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
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80% (01:34) correct
20%
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Truck A is 40 miles ahead of Truck B on a highway. Both trucks are moving in the same direction at constant but different speeds, such that in 4 hours Truck B will reach Truck A. In the following table, identify a speed, in miles per hour, for Truck A and a speed, in miles per hour, for Truck B that together are consistent with the given information.
Make only one selection in each column.
Make only one selection in each column.
|
Truck A |
Truck B |
----------- |
| 45 | ||
| 48 | ||
| 52 | ||
| 56 | ||
| 58 | ||
| 61 |
ShowHide Answer
Official Answer
Truck
A: 48 Truck
B: 58
A: 48 Truck
B: 58
The distance between the trucks has to be covered in 4 hours, so the relative speed between the trucks is 40/4= 10 miles/hour
The difference between their speed is 10 miles / hour
So the two numbers can be 48 and 58. Truck B has to catch up with truck A, so speed of truck B has to be greater than that of A,
So speed of truck B is 58
Speed of truck A is 48
Had swapped the speeds in the last line by mistake. Rectified in edit.
Posted from my mobile device
The difference between their speed is 10 miles / hour
So the two numbers can be 48 and 58. Truck B has to catch up with truck A, so speed of truck B has to be greater than that of A,
So speed of truck B is 58
Speed of truck A is 48
Had swapped the speeds in the last line by mistake. Rectified in edit.
Posted from my mobile device
30 Oct 2020, 09:15
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Sajjad1994
Truck B will have to cover the distance of 40miles in 4 hours. Therefore, speed of truck B has to be 10 miles/hour more than speed of truck A.
Speed of truck B = 58 miles/hour
Speed of truck A = 48 miles/hour
is consistent with the reasoning above.
| Truck A | Truck B | |
| 45 | ||
| * | 48 | |
| 52 | ||
| 56 | ||
| * | 58 | |
| 61 |
