Sales team a at Dr a lot Car Sales 9 cars during the first week of the new cell. Over the next 3 weeks they sell six cars 10 cars and seven cars what is the team's average weekly sales for the four weeks

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!