Ishaan is 2 times as old as Christopher. 35 years ago, Ishaan was 7 times as old as Christopher. How old is Christopher now?

SO Christopher is 42

Step-by-step explanation:

I = 2c

i-35 = 7(c-35)

2c - 35 = 7(c-35)

2c - 35 = 7c - 245

-35 = 5c - 245

210 = 5c

c = 42

Ishann is 84

Christopher is 42

35 years ago, Ishann was 49 and Christopher was 7, which is 7 times as old

Ishann is 84

Christopher is 42

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.