172k views
5 votes
While travelling, john left destination a at 9 am. driving until 7 pm, he travelled a total of 500 miles. the next day, john left at 9 am and drove until 5 pm, covering 270 miles. what was the average speed for both days, while driving?

User Pjominet
by
8.0k points

2 Answers

1 vote

Answer:

10 hours 500 miles

8 hours 270 miles

_________________

18 hours 770 miles

Average speed: 770 / 18 = 42.77;

Explanation:

User Mark Bourke
by
8.3k points
3 votes

Answer: 42.78 miles per hour.

Explanation:

Given: For first day,

Distance
d_1=500 miles

Time
t_1=10 hours

For next day

Distance
d_2=270 miles

Time
t_2=8 hours

For both days,

Total distance =
d_1+d_2=500+270=770 miles

Total time taken =
t_1+t_2= 10+8=18hours

Now, the average speed for both days, while driving will be


\text{Average speed}=\frac{\text{Total distance}}{\text{Total time}}\\\\=(770)/(18)=42.7777777778\approx42.78

Hence, the average speed for both days, while driving = 42.78 miles per hour.

User Erik Post
by
8.3k points
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories