Question 901153
Some bank robbers leave town, speeding at 70 mph. Ten minutes later, the police give chase, traveling at 78 mph. How long will it take the police to overtake the bank robbers?
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10 min=1/6 hr
let x=travel time of police
x+1/6=travel time of robbers
distance=travel time*speed (same for police and robbers)
78x=70(x+1/6)
78x=70x+70/6
8x=70/6
x=1.46
How long will it take the police to overtake the bank robbers? 1.46 hrs