3. Arlan and Bryan started driving from the same place. Arlan drove at an average speed of 55 kph, Bryan drove at an average speed of 65 kph. How far apart were the after 2 hours?
They separate at a rate of 10 km/h, if they are going in the same direction. The directions they travel should have been specified.
After 2 hours of going in the same direction, they will be 20 km apart.
To find the distance between Arlan and Bryan after 2 hours, we need to calculate the distance each person traveled.
Arlan's average speed is 55 kph, so after 2 hours, he would have traveled 55 * 2 = 110 kilometers.
Bryan's average speed is 65 kph, so after 2 hours, he would have traveled 65 * 2 = 130 kilometers.
Therefore, the distance between Arlan and Bryan after 2 hours is 130 - 110 = 20 kilometers.
To find the distance between Arlan and Bryan after 2 hours, we need to calculate the distance traveled by each person separately and then find the difference between the two distances.
First, let's find the distance traveled by Arlan. We can use the formula:
Distance = Speed × Time
Arlan's speed is 55 kph, and he traveled for 2 hours, so the distance traveled by Arlan would be:
Distance_Arlan = 55 kph × 2 hours = 110 km
Next, let's find the distance traveled by Bryan using the same formula:
Distance_Bryan = 65 kph × 2 hours = 130 km
Now, to find the distance between Arlan and Bryan, we subtract the distance traveled by Arlan from the distance traveled by Bryan:
Distance_Apart = Distance_Bryan - Distance_Arlan
= 130 km - 110 km
= 20 km
Therefore, Arlan and Bryan were 20 kilometers apart after 2 hours of driving.