Beths weekly income is 600$ per week.
600 / 0.4 = 240
Answer:

Step-by-step explanation:
1. Find the numerator:

2. Simplify the fraction:

Answer:
10%
Step-by-step explanation:
First, 97.90-89=8.90
8.90/89 = x/100
8.90 x 100 = 890
890/89=10%
Check Answer:
89 x 10%=8.90
89+8.90= 97.90
Therefore, the sales tax percentage is 10%
Ummm hi :) Ann’s Kama abs