As Randy swam underwater, his elevation changed steadily for 4 minutes. Altogether it changed -20 feet. What was the change in elevation during each minute?

1 Answer
Meave60
Jan 20, 2017

#"-5 feet per minute"#

Explanation:

In order to find the change in elevation during each minute, divide the total change in elevation by the total number of minutes.

#"-20 ft"/"4 min"="-5 ft/min"#

The change in elevation is #"-5 feet per minute"#. The negative sign is an indication that the change in elevation is downward.

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