While riding her bike to the ocean and back home 6 imes, Kelly timed herself at 59 min, 51 min, 57 min,63 min,45min, and 53 min. She had set a goal of averaging 53 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 6 imes, Kelly timed herself at 59 min, 51 min, 57 min,63 min,45min, and 53 min.  She had set a goal of averaging 53 minutes for her rides.  How many minutes will she need to spend on her seventh ride to attain her goal?

amistre64 · Answer

7 rides averaged out over so many times is:

(sum of the first 6) + one more
-------------------------- = average of 53
                  7

her last ride should will be: 53(7) - (sum of the first 6)

anonymous · Answer

(59+51+57+63+45+53+x)/7=54min