3 2. Nikita has to travel a total of 351 km. She travels first 216 km in 4 hours. (a) Calculate her average speed for the first part of the journey. (b) If she continues at the same average speed, calculate the time taken for the entire journey.
Answers
Given,
Total distance of the journey = 351 miles
First 216 miles is covered in 4 hours.
Average speed is the same tor whole journey.
To Find
The total time to complete the whole journey.
Step-by-step explanation:
We can simply solve this mathematical problem by using the following mathematical process.
Now, we have to calculate the average speed of the first part of her journey.
Average speed of her first part of the journey :
= Total distance of the first part of the journey / Time taken to complete the first part of the journey
= (216/4) mph
= 54 mph
Now, it is given that the average speed is constant throughout the whole journey.
So, average speed of the whole journey = 54 mph
Time taken to complete the whole journey :
= Total distance of the whole journey / Average speed
= (351/54) h
= 6.5 hours
Hence, nikki will take 6.5 hours to complete the whole journey.
Answer:
a)avg speed 54km/hr b)351/54= 6hr 50 min
Step-by-step explanation:
216/4=54