20% chance for the letter box and 25% chance for Number box.
Terri walked in her own 93rd percentile, while April swam in her own 99th percentile. April is off to a slightly better start.
Solution:
<u>Note that:</u>
To find the solution to the proportion, we will need to simplify the equation (4/7 = 10/x)
- 4/7 = 10/x
- => 4x = 70
- => x = 70/4 = 35/2 = 17.5.
Hoped this helped!