At football practice, players do a 20-minute warm-up before starting their practice drills. After the practice drills, they do a 10-minute cool-down. The expression 20+d+10 describes the length of practice, where d is the number of minutes the practice drills last. How long, in minutes, does practice last if 30 minutes are spent on practice drills.
Plug in d. D = the number of minutes the practice drills last
"30 minutes are spent on practice drills."
20 + 30 + 10 = 60 minutes.
Write each rational number in the form a/b, where a and b are integers
To find how long practice lasts when 30 minutes are spent on practice drills, we need to substitute the value of d (number of minutes the practice drills last) into the expression 20+d+10.
Given that d = 30, we can substitute this value into the expression to get:
20 + 30 + 10
Simplifying this expression, we get:
60 minutes
Therefore, practice lasts for 60 minutes when 30 minutes are spent on practice drills.