SOLUTION: Can you please help me solve this word problem using two variables. I have tried but i only know how to use one variable, not two.
A car and bike set out at noon from the same
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A car and bike set out at noon from the same
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Question 847065: Can you please help me solve this word problem using two variables. I have tried but i only know how to use one variable, not two.
A car and bike set out at noon from the same point and head in the same direction. At 1:00 P.M, the car is 60 km ahead of the bike. Find how fast each travels, given that the car travels four times as fast as the bike Answer by josmiceli(19441) (Show Source):
You can put this solution on YOUR website! here's a solution with 2 variables:
Let = he speed of the bike = the speed of the car
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Let = the distance in km the bike travels in 1 hour = the distance the car travels in 1 hour
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Equation for the bike:
(1)
Equation for the car:
(2)
--------------------
Substitute (1) into (2)
(2)
(2)
(2)
and
The bike travels 20 km/hr
The car travels 80 km/hr
------------------------
check:
(1)
(1) km
and
(2)
(2)
(2)
(2) km
OK
Note that you can say
and in order to plot
on x-y plane
