One car travels at 10 miles an hour and another travels at 5 mph. in how many hours will they be 45 miles apart?

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Answer 1 · 2016-10-18T08:27:24

#t=3" hours or 9 hours"#

enter image source here

#"area under graph gives displacement..."#

#"if cars move at the same direction :"#

#10*t-5*t=45#

#5t=45#

#t=45/5#

#t=9 " hours"#

#"if cars move at opposite direction"#

enter image source here

#10t+5t=45#

#15t=45#

#t=3" hours"#