You set off on a road trip at 10am the mileage on the car at the start reads 42,756 miles you stop driving at 3PM the mileage reads 42,982 miles what is the average speed the car traveled

The first week samantha learned to read braille, she could read 10 words per minute. in the second week she increased her speed by 20%. in the third week she increased her speed again by another 25%. how many words could she read per minute by the third week? hurry and tell me!