In an endurance race, a car drove the whole race at a constant speed of 3 miles per minute to cover the total race distance D. Was the value of D greater than 500 miles?
Statement 1. The time taken by the car to cover D was more than 2 hours.
Statement 2. The time taken by the car to cover D was less than 2.75 hours.
OA B
Source: e-GMAT
In an endurance race, a car drove the whole race at a constant speed of 3 miles per minute to cover the total race
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\(3\) miles per minute = 180 miles per hourBTGmoderatorDC wrote: ↑Mon Mar 15, 2021 4:48 pmIn an endurance race, a car drove the whole race at a constant speed of 3 miles per minute to cover the total race distance D. Was the value of D greater than 500 miles?
Statement 1. The time taken by the car to cover D was more than 2 hours.
Statement 2. The time taken by the car to cover D was less than 2.75 hours.
OA B
Source: e-GMAT
Statement 1 tells us that the time taken by the car was more than 2 hours.
If the car took \(2.5\) hours to travel, then the total distance would be \(450\) miles.
If the car took \(3\) hours to travel, the total distance would be \(540\). Not sufficient. \(\Large{\color{red}\chi}\)
Statement 2. The time taken by car was less than \(2.75\) hours. Even if the car took exactly \(2.75\) hours, then the total distance would be \(495,\) which is less than \(500.\)
So, statement 2 gives a definite number. Sufficient. \(\Large{\color{green}\checkmark}\)
Therefore, B