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The mean of Gregs journey times to work on 3 days was 32 minutes If it took him 30min and 28min on two of the days how long did it take him on the third day

Arithmetics
Nicole_14

Nicole_14 - 19.01.2016 22:00The mean of Gregs journey times to work on 3 days was 32 minutes If it took him 30min and 28min on two of the days how long did it take him on the third day

Rebecca_J - 19.01.2016 22:05In order to work out the mean, we add all the values together and then divide by how many values we had. So we have (30 + 28 + x)/3 = 32 To work out what the third day (x) was, we must work backwards and do the opposite. 30+28+x=96 x=96-30-28=38 minutes So the final answer: Greg took 32 minutes to get to work.

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