To find out how many minutes Quinesha exercises in 4 weeks, we start by determining her rate of exercise per day.
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In 2 days, Quinesha exercises 50 minutes. Therefore, her daily exercise time is: \[ \text{Daily exercise time} = \frac{50 \text{ minutes}}{2 \text{ days}} = 25 \text{ minutes per day} \]
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Next, we calculate the total number of days in 4 weeks: \[ \text{Total days in 4 weeks} = 4 \text{ weeks} \times 7 \text{ days/week} = 28 \text{ days} \]
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Finally, we find out how many minutes she exercises in 4 weeks: \[ \text{Total minutes in 4 weeks} = 25 \text{ minutes/day} \times 28 \text{ days} = 700 \text{ minutes} \]
Thus, Quinesha exercises 700 minutes in 4 weeks.