Question

Antonio finished the race in 28 minutes and 11.00 seconds. Julio finished 0.08 second faster than Antonio. Pete finished 0.1 second faster than Julio. How long did it take Pete to finish the race?

Answer 1

Answer:

It took Peter 28 minutes and 10.82 seconds to finish the race.

Step-by-step explanation:

We have that:

$t_{A}$: Antonio = 28 min + 11.00 s (1)

$t_{J}$: Julio = A - 0.08 s  (2)

$t_{P}$: Pete = J - 0.1 s   (3)

Then, the time at which Pete finished the race is:

$t_{P} = t_{J} - 0.1$   (4)

By entering equations (1), (2), (3) into (4) we have:

$t_{P} = (t_{A} - 0.08) - 0.1$            

$t_{P} = 28 min + 11.00 s - 0.18 s = 28 min + 10.82 s$

Therefore, it took Peter 28 minutes and 10.82 seconds to finish the race.    

I hope it helps you!