Ast week Jill ran 31 miles more than Amanda. Jill ran 42 miles. How many miles did Amanda run?

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Answer 1 · 2018-04-09T13:59:49

Amanda ran #11# miles

Set up an equation

We know that Jill ran #31# more miles than Amanda, so we can write the equation like this.

#A + 31 = J#

Then, we are told that Jill ran #42# miles, so we can plug in that number to her variable (J).

#A + 31 = 42#

Subtract #31# from both sides.

#A = 11#

Amanda ran #11# miles.