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A car travels 60 km at 30 km/hr and then a further 180 km at 160 km/hr. Find the total time taken.

1 Answer

7 votes

Answer: 76.8km/hr

Step-by-step explanation:

PT1

sp1 - 30km/hr

d1 - 60km

60 divided by 30 = 2hrs

PT2

sp2 - 160km/hr

d2 - 180km

180 divided by 30 = 1hr, 7min, 30sec (1.125)

PT3

Total Time Taken - 2hrs + (1:07:30) 1.125 = 3.125hrs

Avg. Speed - (60km + 180km) divided by 3.125hrs

60km + 180km = 240

240km divided by 3.125 = 76.8km/hr

User Jbcoe
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