Answer/Step-by-step explanation:
Recall: 
a. 
b. 
c. 
Answer:
The answer to your question is Katie had 15 rocks and Oliver 45 rocks.
Step-by-step explanation:
Conditions
Katie has x amount of rocks
Oliver has 3x amount of rocks
The final amount of rocks
Oliver = 3x + 75
Katie = x + 105
Now, they have the same amount of rocks, then we can equal both equations
3x + 75 = x + 105
Solve for x
3x - x = 105 - 75
2x = 30
x = 30/2
x = 15
Conclusions
At first Katie had 15 rocks and Oliver had 3(15) = 45 rocks
.55*X=231 .....X=231/.55.......X= 420
1 2/3 is 5/3 as in improper fraction
Answer:
c. 29 feet
Step-by-step explanation:
