Kim finished a race in 48.47 seconds. This is 9.7 seconds faster than her practice time. What was Kim's practice time? A 38.77 seconds B 47.50 seconds C 49.44 seconds D 58.17 seconds

58.17 seconds

Step-by-step explanation:

48.47 + 9.7 = 58.17

38.77 seconds

Step-by-step explanation:

Given that,

Kim finished a race in 48.47 seconds.

This is 9.7 seconds faster than her practice time.

We need to find Kim's practice time.

Finished time =  9.7 + (practice time)

i.e.

Practice time = (Finished time-9.7)

= 48.47 - 9.7

= 38.77 seconds

Hence, the practice time is 38.77 seconds.

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