A punter's first four punts are 30 yd, 20 yd, 27 yd, and 29 yd. After a fifth punt, the punter's mean was 30 yd. How long was the fifth punt?
Let D be the distance of the last punt......and we have
[ 30 + 20 + 27 + 29 + D ] / 5 = 30
Multiply both sides by 5 and simplify
106 + D = 150
Subtract 106 from each side
D = 44 yd
