Sent a picture of the solution to the problem (s).
Mean = (total of contributors) / (number of contributors)
For the 6 people in the room, you have
40 = (total of contributors) / 6
(total of contributors) = 6*40 = 240
A 60-year-old left the room, decreasing the total of contributors by 60.
(new total of contributors) = (total of contributors) - 60
(new total of contributors) = 240 - 60 = 180
Then the new mean is
(new mean) = (new total of contributors) / (new number of contributors)
(new mean) = 180 / 6 = 36
The mean age of the remaining 5 people is 36.
To find the answer, you must subtract 1632 and 74, which results in 1558, so the Transamerica Pyramid is 1558 ft tall.
I hope this helps.
The answer is 144 cm. 24*6 equals 144, so that would be the answer
If you cross mulitply the answer would be 13.3
