Question #4b96c

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A08
Aug 25, 2016

Suppose the cars start at the same time and collide with each other after time #t# hours

Distance traveled by car A in this time#=" Displacement"#
#="Speed"xx"Time"#
#=20xxt" miles"#
Similarly distance traveled by car B in the same time#=35xxt" miles"#
At the time of collision total distance traveled by both cars must be #=60 " miles"#
#:.# we have
#20t+35t=60#
#=>55t=60#
Solving for #t# we obtain
#t=60/55~~1" hr "5 " m "27" s "#

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