Hey there!
The answer for your problem is: A: x=7
Let me know if you'd like me to explain how I got this answer!
She probably does that for exercise. So, she gets to the level that she wants, and she gets more exercise so she gets there faster.
I believe it's 2110. Because you have to multiply the numbers and then add the 2 numbers to get the final number. So 7 times 3 is 21
7 + 3 is 10
So I got 2110.
So first we need to find what percent of the students walk to school.
50 + 35 = 85% don't walk leaving only 15% that walk to school,
To find the 15% percent that DO walk we multiply .15 by the total number of people.
.15 x 1640 = 246 people walk to school
