120 grams half life at 45 days would be 60 then half life of 60 in another 45 days (90 total) should be 30 grams
Answer:
3.46 but if you simplify it is 3.5
Step-by-step explanation:
She earns 32.40 for working 4 hrs.....32.40/4 = 8.10 per hr
y = 8.10h...where y is the amount of money earned and h is the number of hrs worked
Answer:
A.102%
Step-by-step explanation:
Let cost price of painting=$100
In first year price increased 20%
Then , the price=
$120
In second year
Price decreased 15%
Then , the price of painting=
The price of painting=$102
Percent =
By using this formula
Then, we get
Percent of the original price=
Percent of the original price=102%
Option A is true.