Question

Mark travels 40kmph going to a neighboring city and 50kmph to come back using the same road. He drove a total of 4 hours away and back. What is the distance from Mark's house to the city he visited? (round your answer to the nearest mile).

Answer 1

Answer:

22.22 miles

Step-by-step explanation:

Given,

Speed= 40 km/hr (while going)

Speed= 50 km/hr (while coming)

Time taken 4 hrs (total)

Let the distance be x miles

x/40 +x/50 =4 hrs

4 hrs= (50x+ 40x)/50*40 = 90x/2000

90x/2000= 9x/200

x=200/9

22.22 miles