Kn + 4f = 9f
kn + 4f - 4f = 9f - 4f
kn = 5f
kn/5 = 5f/5
kn/5 = f.
f = kn/5 or
f = 1/5 (kn).
Answer:
1.25% of all the 8,000 people who tried the shampoo had a mild allergic reaction
Step-by-step explanation:
Divide 8,000 by 64 to get the unsimplified percentage
Then put a dot between 1 and 2 to get the percentage to get the percentage, 1.25%
50 employees work 40 hours/week at $20/hour.
Their combined regular hours salary is 50 * 40 * $20 = $40,000.
15 employees worked 4 hours at $30/hour.
Their combined overtime salary is 15 * 4 * $30 = $1,800.
The total payroll is the regular hours plus the overtime:
$40,000 + $1,800 = $41,800
The overtime is the following percentage of the total payroll:
$1,800/$41,800 * 100% = 4.3%
Answer: 4.3%
I really don’t know the answer .
QUESTION:
A battery was charged. When the charging began, it was 23 percent full. After 30 minutes of charging, the battery was 89 percent full. how fast did the battery charge and how long did it take?
Solution :
<u>Given</u>
- Initial amount of charge = 23%
- Amount after charge = 89%
<u>procedu</u><u>re</u>
Let the rate of charging be r .
r = (change in charge level) / (time interval) = (89% - 23%) / (30 min) = 2.2 % per minute
charge = (rate of charging)(time) + (initial charge)
100% = r*t + 23%
100% = (2.2 %/min)t + 23%
Solve for t and get
t = [(100 - 23) / 2.2]
Answer = 35 min
