The treadmill display indicated that Joanna had completed 30% of her workout with 35 minutes remaining. How much time had she already spent on the treadmill?
Since when is "college" a School Subject?
.7X = 35
X = 50
Her workout time is 50 minutes, but she has spent 30% of that, or
.3(50)minutes, or 15 minutes.
where did u get 7 from?
100% - 30% = 70%
1.00 - 0.3 = 0.7
To determine how much time Joanna had already spent on the treadmill, we can use a simple proportion based on the given information.
First, let's represent the total time of Joanna's workout as "x" minutes.
According to the treadmill display, Joanna had completed 30% of her workout with 35 minutes remaining. This means she had yet to complete 70% of her workout.
We can set up the following proportion:
(30 / 100) = (x / 70)
To solve this proportion, we cross-multiply:
100 * x = 30 * 70
Divide both sides by 100:
x = (30 * 70) / 100
Simplifying this equation:
x = 21 * 7
x = 147
Therefore, Joanna had already spent 147 minutes on the treadmill.