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 $11$ $11$ miles

Set up an equation

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

$A + 31 = J$ $A + 31 = J$

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

$A + 31 = 42$ $A + 31 = 42$

Subtract $31$ $31$ from both sides.

$A = 11$ $A = 11$

Amanda ran $11$ $11$ miles.