Question

Tyrone ran the 100-meter race 3 times. His fastest time was 10.84 seconds. His slowest time was 13.52 seconds. If Tyrone's average time was 12.0 seconds, what was his time for the third race? *​

Answer 1

The third time = 11.64 seconds

Explanation:

Let the average time be x

The average of a set of numbers is the sum of the numbers divided by the number of terms. In this case:

Average = (10.84 + 13.52 + x) ÷ 3 = 12.0

`(10.84\ + 13.52\ + x)/(3)= 12.0\\(24.36\ +\ x)/(3) = 12.0\\cross-multiplying\\24.36\ +\ x = 3 * 12.0\\24.36\ +\ x = 36\\x = 36 - 24.36\\x = 11.64\ seconds`