Answer:

Step-by-step explanation:
Hello, let's note v the rate of the boat and r the rate of the current. We can write the following

It means that

But we can as well use the second equation:

and then

Hope this helps.
Do not hesitate if you need further explanation.
Thank you
Answer:
multiply opposite side and the answer is ready now because check your soulation
Answer:
.
Step-by-step explanation:
The given number is
.
We need to find a rational number in fraction form that is equivalent to given number.
Let
...(1)
Multiply both sides by 10.
...(2)
Subtracting (1) from (2), we get
Divide both sides by 9.
Therefore, the required rational number is
.
Ok, so lets convert all the percents into decimals to help us solve this problem
A 3.0%= 0.03
B 3.5%= 0.035
C 4.0%= 0.04
D 4.5%= 0.045
Now, we can multiply $200 by all the decimals we just converted to see which one will add up to $208
200*0.03= 6-------200+6=206 (this is not equal to 208 so it's not A)
200*0.035=7--------200+7= 207 (Still does not equal 208, so it's not B)
200*0.04= 8---------200+8=208 C is your answer