Question

Barbara travels 10 miles to reach her office. She walks half a mile at a speed of 8 miles per
hour to catch a bus that travels at a speed of 40 miles per hour. How much time does she
take to reach her office?​

Answer 1

Answer:

2 : 04

Step-by-step explanation:

10 + 8 = 18

18 ÷40 = 2 : 04

Answer 2

Answer:

It took 29 minutes and 15 seconds for barbara to reach her office.

Step-by-step explanation:

• The formula of Time, Speed, and Distance is

⇒  $Time = \frac{Distance}{Speed}$

• Given, Half a mile at a speed of 8 miles per hour.

Therefore time taken to cover the distance will be

⇒ Time(1) = $\frac{0.5}{8}$ hour    -------------------------Eq.1

• Now Remaining distance is 9.5 miles (10-0.5) and is covered at a speed of 40 miles per hour.

⇒ Time(2) = $\frac{9.5}{40}$ hour  --------------------------Eq.2

Adding Eq.1 and Eq.2 we get the total time taken by barbara to reach her office,

⇒ Total time = Time (1) + Time (2)

⇒ Total time = $(\frac{0.5}{8} + \frac{9.5}{40} ) hours$

⇒ Total time = 0.4875 hours or 29.25 minutes

Therefore total time taken by barbara to reach her office will be 29 minutes and 15 seconds.

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