Math - Oh my gosh please help!

posted by Anonymous

Lisa's Running Distances

Day Distances
(in kilometers)

Monday 2.05
Tuesday 4.10
Wednesday 3.80
Thursday 1.95
Friday 4.05


Estimate the average distance, in kilometers, Lisa ran for the five days. Explain your estimation strategy.

Based on your previous answer, estimate the number of days it will take Lisa to run 100 kilometers. Explain your estimation strategy.



Once again please help, I need you Ms.Sue!

  1. Damon

    well she ran for five days so I will find the distance she ran in the five days and divide by five to find the distance per day
    2.05+4.10+3.80+1.95 + 4.05 = 15.95 in the five days
    15.95 / 5 = 3.19 km/day

    3.19 km/day * x days = 100 km
    x = 100/3.19 = 31.35 days
    probably a bit more because she will get tired, but maybe less because she is getting in shape fast :)

  2. Ms. Sue

    To estimate the total distance, I'd round each day's distance to the nearest kilometer, and add them together. Divide the sum by 5 to get an average. Round to the nearest km.

  3. Reiny

    Since this is supposed to be an approximation,
    I see three days with 4 km each
    and two days with 2 km each
    total = appr 16 km

    so appr 16 km in 5 days or about 3 km/day
    32 km in 10 days
    96 km in 30 days
    100 km in about 31 days

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