While riding her bike to the ocean and back home 66 times, Margaret timed herself at 54min54min, 48min48min, 59min59min, 66min66min, 48min48min, and 46min46min. She had set a goal of averaging 5454 minutes for her rides. How many minutes will she need to spend on her seventh ride to attain her goal?
Question
While riding her bike to the ocean and back home 66 times, Margaret timed herself at 54min54min, 48min48min, 59min59min, 66min66min, 48min48min, and 46min46min. She had set a goal of averaging 5454 minutes for her rides. How many minutes will she need to spend on her seventh ride to attain her goal?
Solution
To find out how many minutes Margaret needs to spend on her seventh ride to attain her goal, we first need to find out how many total minutes she has spent on her bike rides so far and how many total minutes she needs to spend to average 54 minutes over 7 rides.
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Add up the times of her first six rides: 54min + 48min + 59min + 66min + 48min + 46min = 321 minutes.
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Multiply her goal average time (54 minutes) by the total number of rides (7): 54min * 7 = 378 minutes.
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Subtract the total time spent so far (321 minutes) from the total time needed to reach her goal (378 minutes): 378min - 321min = 57 minutes.
So, Margaret needs to spend 57 minutes on her seventh ride to attain her goal of averaging 54 minutes per ride.
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