I travel the first part of my journey at 40 kmph and the second part at 60 kmph and cover the total distance of 240 km to my destination in 5 hours. How long did the first part of my journey last
Choose one:
A) 1
B) 2
C) 3
D) 4
E) 5
The total time of journey = 5 hours.   Let 'x' hours be the time that I travelled at 40 kmph   Therefore, 5–x hours would be time that I travelled at 60 kmph.   Hence, I would have covered x×40+(5−x)60 kms in the 5 hours = 240 kms.   Solving, for x in the equation 40x+(5–x)×60=240, we get   40x+300–60x=240   ⇒20x=60 or x= 3 hours   ANSWER:3
<result>C</result>
I travel the first part of my journey at 40 kmph and the second part at 60 kmph and cover the total distance of 240 km to my destination in 5 hours. How long did the first part of my journey last