Two runners leave the starting gate, one running 12 mph and the other 10 mph. If they maintain the pace, how long will it take for them to be one-quarter of a mile apart?
1 Answer
May 12, 2018
Explanation:
CHECK
Distance travelled by them after
#"d"_1 = "12 mph" × 1/8\ "mph" = 12/8\ "miles"#
#"d"_2 = "10 mph" × 1/8\ "mph" = 10/8\ "miles"#
Separation
#"Δd" = 12/8\ "miles" - 10/8\ "miles" = ((12 - 10)\ "miles")/8 = 1/4\ "miles"#