SOLUTION: A car and a truck leave a highway rest area at the same time. The car travels south at 55 km/h and the truck travels north at 40 km/h. After how many minutes will they be 38 km ap

Algebra.Com
Question 1168906: A car and a truck leave a highway rest area at the same time. The car travels south at 55 km/h and the truck
travels north at 40 km/h. After how many minutes will they be 38 km apart?
CAN YOU ALSO PLEASE USE THE GUESS METHOD. I NEED IT IN ORDER TO COMPLETE MY HOMEWORK
THANK YOU
Answer by ikleyn(52797)   (Show Source): You can put this solution on YOUR website!
.

They move in opposite direction --- therefore, their separating speed is the sum  55 + 40 = 95 km/h.


The distance of 38 km is    of 95 kilometers.


Therefore, the time spent to get separated at 38 kilometers is    of an hour,  which is 24 minutes.    ANSWER

Solved.

--------------

It is the  "GUESSING"  method,  or mental reasoning.

Regarding the algebra method,  I solved this problem for you at this forum several days ago.



RELATED QUESTIONS

A car and a truck leave a highway rest area at the same time. The car travels south at 55 (answered by ikleyn)
A car and a truck leave a highway rest area at he the same time. The car travels south... (answered by oberobic)
if a truck enters the highway and travels 60 kilometers per hour and a car enters the... (answered by Alan3354)
Suppose a car and a truck both leave from Johannesburg. The car leaves at 09:00, and the... (answered by josmiceli)
A truck and a car leave a service station at the same time and travel in the same... (answered by Alan3354)
A car is travelling on a straight highway. At 10 o'clock it passes a truck travelling in (answered by mananth)
Both car A and car B leave school at the same time, traveling in the same direction. Car... (answered by ankor@dixie-net.com)
Both car A and car B leave school at the same time, traveling in the same direction. Car (answered by algebrahouse.com)
Both car A and car B leave school at the same time, traveling in the same direction. Car (answered by math_tutor2020,josgarithmetic)