Question 184851
Step 1:
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Let x=rate of the passenger car
_ x-6=rate of the bus
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Note: <i>distance=rate*time</i> so <i>time=distance/rate</i>
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Step 2: Write the algebraic equation
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80/(x-6)=120/x
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Step 3: multiply both sides by x(x-6)
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80x=120(x-6)
80x=120x-720
40x-720=0
4x-72=0
x=72/4=18 :: Therefore, the passenger car travels at the rate of 18 km/hr.
x-6=18-6=12 :: Therefore, the bus travels 12 km in 1 hr.
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