Answer:
8 hours
Step-by-step explanation:
Let x = the hours she work
Equation-
1. 20x + 12 = 172
2. - 12 - 12
20x = 160
3. /20 /20
4. x= 8 hours
1. Write out the equation
2. subtract 12 from both sides
3. Divide 20 on both sides
4. Your answer is 8 hours
Answer:u
20/8 = 4K/32
5/2 = K/8
Cross multiply
2K = 5×8
2K = 40
K = 40/2
K = 20
Answer:2880