Question

Khan Academy

Interpret two-step equation word problems
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Lilianna uses
calories per minute just by sitting. She uses 1 more calorie per minute by walking. Lilianna uses a
total of 12
calories walking to the park.
Lilianna uses the equation, d
= 12
to represent the situation.
What does the variable d represent in the equation?

Answer 1

The variable d stands for how many calories she used.

Explanation:

the problem says that she uses 1 calorie per minute while walking, and then it says that she walked 12 minutes. 12×1= 12 calories

d=12 calories which equals to the 12 minutes she walked