SOLVED: Translate to a system of equations and then solve: When Jenna spent 10 minutes on the elliptical trainer and then did circuit training for 20 minutes, her fitness app says she
3 Elliptical Workouts For Weight Loss (+Free Printable)
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Elliptical: Calories Burned in 30 Minutes
Is a 20-Minute Elliptical Trainer Workout Good? - HomeFitnessCode - UK