Ellie's Parents travel down to see her and have a look at the property. When they start off, the milleage on the car reads 46 817 and when they return home it is 47 441. How far away is Ellie's house from her parent's house?
Actually, the homes are 312 miles apart. The difference in the odometer readings ( 47,441 – 46,817 = 624 ) is the mileage from traveling both directions.