2. Roger's class as 35 students. 21 of the students are girls. What percent of the class are girls? Round to the nearest whole number (Number before the decimal) if necessary.

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!