Question

a long distance runner does a first lap around a track in 50 seconds as she gets tired her laps increase by 20% each time. how long does it take her to run 3 laps

Answer 1

Explanation:

20% of 50 is 10 so 50+10=60 50+60+70=180

Answer 2

182 sec

Explanation:

50*1.2 = 60

60*1.2 = 72

So it takes 50 + 60 + 72 = 182 seconds (3 min, 2 seconds) to run three laps