Question 366454
let distance to work be x miles
speed = 45 mph
so time = x/45 hours
..
return speed = 30 mph
return time = x/30
..
x/45+x/30 = 1
30x+45x / 30*45 =1
75x= 30*45
/75
x= 30*45/75
x=18 miles ... distance to work place
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