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随意 问题
Ok , so i have this math 问题 , that i couldn't find an answer to .....?!
A man received a bill with 450$ ....
so he took 250$ from his mom , and 250$ from his dad ...and now he has 500$
after paying his bill , he only had 50$ left ...
so he returned 10$ to his mom , and 10$ to his dad ...to keep only with him 30$ from the 50$ ....
so after that now he only owns to his mom 240$ and his dad 240$
but how come 240+240+30=510 , not only 500 !!!?
from where that 10$ came from ?!
so he took 250$ from his mom , and 250$ from his dad ...and now he has 500$
after paying his bill , he only had 50$ left ...
so he returned 10$ to his mom , and 10$ to his dad ...to keep only with him 30$ from the 50$ ....
so after that now he only owns to his mom 240$ and his dad 240$
but how come 240+240+30=510 , not only 500 !!!?
from where that 10$ came from ?!
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