The value of X is 7 because it is one lover than Y.
1. You have that the speed is:
Where 
is the distance and 
is the time.
2. Tory pilots her boat 
before docking, therefore, his time is
3. Emilio continues for another 
, with a total of 
before docking. Therefore, his time is:
4. And his speed is:
5. Solve for 
and substitute the value into the formula of Tory's time:
The answer is: 
Since the company spends 20$ on each doll and sells each for 30$ thats a 10$ profit.
If the company spends 400$ on promotion it would take 40 dolls since
400$ / 10$(amount of profit per doll) = 40
so to make the promotion back it would be 40 dolls but the question was to make PROFIT so it must be 41 dolls
