lance and rocky purchased rollerblades for a total of 107 dollars. lance paid 17 dollars more for his rollerblades than rocky did. what did rocky pay?
Answer:
45 dollars
Step-by-step explanation:
The answer can be easily derived using basic algebraic method:
Consider the following:
Assign X as the amount Rocky paid:
X = amount Rocky paid
Assign X + 17 as the amount Lance paid (since he paid 17 dollars more):
X+17 = amount Lance paid
The total for their payments (X and X + 17) is 107:
X + X + 17 = 107
You add the 2 “X”‘s together, giving you 2X + 17 on the left side of the equation:
2X + 17 = 107
You subtract 17 from both sides of the equation:
2X = 107 – 17
Giving you the resulting equiation:
2X = 90
Divide both sides of the equation by 2:
2X/2 = 90/2
To arrive at the answer to the problem:
X = 45
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