Answer:
C. 3.33 hours
Step-by-step explanation:
Use the algebra work equation:
=
+
, where tb is the time to work together, t1 is the time it takes one person, and t2 is the time it takes the other person
Plug in the values we know:
=
+
=
+
=
20 = 6tb
3.33 = tb
So, it would take them 3.33 hours when working together.
Answer:
$46875.
Step-by-step explanation:
We have been given that Dr. Drake buys a sailboat for 125000. He borrows the money at an APR of 7.5% for five years.
We will find total interest after 5 years by using simple interest formula.
, where,
A= Amount after T years.
P= Principal amount.
r= The annual interest rate (in decimal form).
T= Time in years.
First of all we will convert our given interest rate from percent to decimal form.
Now let us substitute our given values in above formula.
To find the amount of total interest we will subtract principal amount from 171875.
Therefore, the total interest after 5 years will be $46875.
