Question

At the track meet, Ervin won the 100-meter dash with a time of 12.45 seconds. Landon finished second. Landon's time contains a 4 with a value 1/10 the value of the 4 in Ervin's time. What could be Landon's time in the 100-meter dash?

Answer 1

Breaking down the value 12.45 

12.45 = 10 + 2 + 0.4 + 0.05

The value of digit '4' in 12.45 is 0.4

1/10 of 0.4 is 0.4 ÷ 10 = 0.04

One possibility of Landon's time = 12.54 [Need to make sure that Landon takes longer than Ervin since he comes second]