Question

Revisit
Question # 35
Nikki has to travel a total of 351 miles. She travels the first 216 miles in 4 hours. Her average speed is the same for
the whole of her journey. How long does the whole journey take?​

Answer 1

Answer:

Nikki has to travel a total of 351 miles. She travels the first 216 miles in 4 hours. (a) What is ... 216 miles ÷ 4 hours = 54 mph. Her average speed is the same for the whole of her journey.

Answer 2

The whole journey takes 6.5 hours

Step-by-step explanation:

Given:

• Total distance = 351 miles
• Time taken to cover 216 miles = 4 hours
• Average speed remains the same throughout

To find: Total time for the journey

Formula Used: $Speed = \frac{distance}{time}$

Solution:

• Speed during first 216 miles $= \frac{distance}{time} = \frac{216}{4} = 54 miles/h$

• Remaining distance  = 351- 216 = 135 miles

The speed remains the same throughout the journey, therefore speed for the remaining 135 miles = 54 miles/h

• Time $= \frac{distance}{speed} = \frac{135}{54} = 2.5$ hours

Hence, total time for the journey = 4+ 2.5 = 6.5 hours.