Back and forth
Calvin arrived at his friends house, and is trying to find a place to park. He drove 123 meters east, but there were no available spaces. He made a U-turn, and drove a further 456 meters west, before finding a spot. How far away (in meters) is he from his friend's house?
Details and assumptions
He started out at his friend's house.
The answer is 333.
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1 solution
He drove 123 meters east and 456 meters west, hence is now 4 5 6 − 1 2 3 = 3 3 3 meters west of his friends house.