Heather finished a race in 58.4 seconds, which was 2.6 seconds less than her practice time. Write and solve an equation to find Heather's practice time. Show that your answer is reasonable.

Answer by Guest

P=58.4+2.6=58+0.40+0.60+2=60+1=61

P=61 seconds.

Answer by Guest

Practice time P seconds
Timing in the Race : R = 58.4 seconds
Improvement Record  I = 2.6 seconds
Race timing = Practice timing - Improvement record
R = P -  I
58.4 seconds = P - 2.6 seconds

Take 2.6 seconds to the left hand side,  58.4 sec + 2.6 sec = P
P = 61.0 seconds

Now, subtract improvement record time from Practice time, you get the race time.

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