A freight train completes its journey of 150 miles 1 hour earlier if its original speed is increased by 5 miles/hour what is the train’s original speed
A freight train completes its journey of 150 miles 1 hour earlier if its original speed is increased by 5 miles/hour. What is the train’s original speed? *** let x=original speed x+5=increased speed travel time=distance/speed .. lcd:x(x+5) 150(x+5)-150x=x(x+5) 150x+750-150x=x^2+5x x^2+5x-750=0 (x-25)(x+30)=0 x=25 What is the train’s original speed? 25 mph
