SOLUTION: Two cars traveling in the same direction leave the same point at the same time. Car 1 is going 65 km/h and Car 2 is going 55 km/h. How far must Car 1 travel before it has a 15 min.
Algebra.Com
Question 337035: Two cars traveling in the same direction leave the same point at the same time. Car 1 is going 65 km/h and Car 2 is going 55 km/h. How far must Car 1 travel before it has a 15 min. lead on Car 2.
Answer by mananth(16946) (Show Source): You can put this solution on YOUR website!
since the cars are travelling in same direction Car 1 gains 10 km every hour.
in 1/4 hour it will gain 10/(1/4)= 2.5 km.
..
Let car 1 travel x km at speed of 65 km/h
car2 will travel x-2.5 km in the same time
..
time = distance /speed
..
x/65 = (x-2.5)/55
55x=65(x-2.5)
55x=65x-162.5
add -65x
55x-65x=65x-65x-162.5
-10x=-162.5
divide by -10
x= -162.5/-10
x=16.25 km. the distance car 1 has to travel to be 15 minutes ahead.
RELATED QUESTIONS
Two cars leave los angeles at the same time traveling in the same direction. One car is... (answered by josgarithmetic)
two cars leave the same point at the same time one car is traveling 1 1/3 times as fast... (answered by jpvn2015)
two bicyclists leave town at the same time going in the same direction. one is traveling... (answered by ankor@dixie-net.com)
two cars leave denver at the same time and travel in opposite directions. One car travels (answered by rfer)
two cars are leaving the same station at the same time going in opposite directions. one... (answered by Alan3354)
if 2 cars traveling in opposite direction leave the same place at the same time. if one... (answered by mananth,solver91311)
A car traveling 88km/h is passed by another car going in the same direction at a constant (answered by scott8148)
Both car A and car B leave school at the same
time, traveling in the same direction. Car (answered by math_tutor2020,josgarithmetic)
Two cars leave the same place at the sametime. the car traveling west is going 9mph... (answered by solver91311)