You burn 10 calories each minute you jog. What integers represents the change in your calories after you jog for 20 minutes?
1 Answer
Oct 5, 2016
200
Explanation:
The ratio is calories per minute, or cal/min. The value is 10 cal/1 min. Setting up a ratio equality to find the change at a different time we have:
10cal/1min = ?cal/20min.
Now we do the math – multiply both sides by 20 min:
20min * 10cal/1min = ?cal/20min * 20 min
The minute dimensions cancel out, leaving us with
200 cal = ?cal. So, a 20-minute jog will use 200 calories.
