The table shows the time taken by Vincent to run 100 metres during his training sessions. After 5 attempts, Vincent wanted to improve his average time taken by 1.3 seconds by running faster in the 6^th attempt. How fast should he run in the 6^th attempt in order for him to make the improvement?

Attempt	1st	2nd	3rd	4th	5th	6th
Time taken  (in seconds)	25	18	23	22	25	?

Total time that Vincent took for the first 5 attempts
= 25 + 18 + 23 + 22 + 25
= 113 s

Average time that Vincent took for the first 5 attempts
= 113 ÷ 5
= 22.6 s

New average time that Vincent took for the 6 attempts
= 22.6 - 1.3
= 21.3 s

Total time that Vincent took for the 6 attempts
= 6 x 21.3
= 127.8 s

Time that Vincent should run in the 6^th attempt in order for him to make the improvement
= 127.8 - 113
= 14.8 s

Answer(s): 14.8 s