two cars start from two towns 400 miles apart and travel towards each other. They pass each other after 4 hours. find the speed
of each car if the difference between their speeds is 20 miles per hour.
2 answers:
<span>use an expression
s = speed of the slower car
then
(s+20) = speed of the faster car
When they meet is after 400 miles
Write distance equation
slow car d + fast car d = 400 mi
4s + 4(s+20) = 400
8s + 80 = 400
8s = 400 - 80
8s = 320
s = 40 m/H</span>
Answer:
5 hours
Step-by-step explanation:
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