SOLUTION: Hi
mr Teo travelled at 40km per hour from A to B.if he increased his speed to 70km per hour, he would take 6 hours less to reach B. What was the distance between A and B.
thank
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mr Teo travelled at 40km per hour from A to B.if he increased his speed to 70km per hour, he would take 6 hours less to reach B. What was the distance between A and B.
thank
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Question 1121844: Hi
mr Teo travelled at 40km per hour from A to B.if he increased his speed to 70km per hour, he would take 6 hours less to reach B. What was the distance between A and B.
thanks Found 2 solutions by Boreal, MathTherapy:Answer by Boreal(15235) (Show Source):
You can put this solution on YOUR website! distance=rate*time
D=40*t1
D=70*t2
t2=t1-6
Therefore, 40*t1=70(t1-6)
40t1=70t1-420
420=30t1
t1=14 hours
distance is therefore 40*14=560 km ANSWER
6 hours fewer is 8 hours and 70*8=560 km
You can put this solution on YOUR website! Hi
mr Teo travelled at 40km per hour from A to B.if he increased his speed to 70km per hour, he would take 6 hours less to reach B. What was the distance between A and B.
thanks
Let D be the distance
Then we get the following TIME equation:
7D = 4D + 1,680 ------ Multiplying by LCD, 280
7D - 4D = 1,680
3D = 1,680
D, or distance =
