Answer:
9/10hr
Explanation:
From the question given:
Carla was able to burn 250 calories by running for one-half (1/2)hr.
Therefore, Carla will burn 450calories by running for = (450x1/2) /250 = 225/250 = 9/10hr
The time taken that should be run to completely burn off the snack cake is 9/10hr.
Since
a snack cake contains 450 food calories and Carla is able to burn 250 calories by running for one-half an hour
So here the time taken should be
= (450x1/2) /250
= 225/250
= 9/10hr
hence, The time taken that should be run to completely burn off the snack cake is 9/10hr.
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