the means of Greg's journey times to work on for 3 days was 28 minutes. If it took him 27miuntes and 25 minutes on two of the days, how long did it take him on the the third day
Answers
Answer:
In order to work out the mean, we add all the values together and then divide by how many values we had. In this case we had
(27 + 25 + x)/3 = 28
To work out what the third day (x) was, we must work backwards and do the opposite.
If finding the mean was adding then dividing, to find the value, we must multiply and then subtract. Instead of diving by 3, we multiply by 3
28 x 3 = 84
Next we subtract the two values we
already have, from 84
84-27 = 57
57 25 32 minutes =
On the third day, Greg took 32 minutes to get to work.
Step-by-step explanation:
In order to work out the mean, we add all the values together and then divide by how many values we had. In this case we had
(27 + 25 + x)/3 = 28
To work out what the third day (x) was, we must work backwards and do the opposite.
If finding the mean was adding then dividing, to find the value, we must multiply and then subtract. Instead of diving by 3, we multiply by 3
28 x 3 = 84
Next we subtract the two values we
already have, from 84
84-27 = 57
57 25 32 minutes =
On the third day, Greg took 32 minutes to get to work.