Calculating
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Given problem
Last week Ashley ran 9 miles less than Jennifer. Ashley ran 15.2 miles.
What to find
How many miles did Jennifer run?
What to do
Ashley ran 15.2 miles, which is 9 less than the distance Jennifer ran. Let's call this distance j.
To find j, we form an equation: 15.2 = j - 9
Add 9 to both sides: 15.2 + 9 = j
Simplify: j = 24.2
Therefore, Jennifer ran 24.2 miles.