A group of 41 teachers went to Disneyland. A regular ticket cost $113. The senior rate is $109. If the total admission price was $4561, how many teachers got the senior rate?

23 teachers got the senior rate

Step-by-step explanation:

Let x represent the number of teachers that got regular tickets.

Let y represent the number of teachers that got senior rate.

.A group of 41 teachers went to Disneyland. It means that

x + y = 41

A regular ticket cost $113. The senior rate is $109. If the total admission price was $4561, it means that

113x + 109y = 4561- -- - - - - - - - -:- -1

Substituting x = 41 - y into equation 1, it becomes

113(41 - y) + 109y = 4561.

4633 - 113y + 109y = 4561.

- 113y + 109y = 4561 - 4633

- 4x = - 72

x = - 72 / - 4

x = 18

y = 41 - y = 41 - 18

y = 23

an advantage of the standard deviation is that it increases as the dispersion of the data increases. e. the interquartile range is preferred when the data are not skewed or no have outliers. an advantage of the standard deviation is that it uses all the observations in its computation.