If Gabrielle takes 19 minutes to run 2 miles then how much time does he take to complete 1 mile.
The above is the ‘b’ question.
We can get to know who long he takes to complete 1 mile taking the mean of the two in the double number line.
In this case it would be, the mean if 2 to get 1 and the mean of 19,
The mean of 2 is,
2miles / 2 = 1 mile.
And the mean of 19 mins is,
19 mins / 2 = 9.5 mins.
Hence, Gabrielle takes 9.5 mins to complete 1 mile.
Hope this helps you. Plz let me know if you have any doubts.