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Mathematical problems that test the mind
The purchase price of a pair of shoes is 45 yuan and 30 yuan!

* * * Lost 1 15 yuan, lost my shoes in 45 yuan, and 70 real coins are gone.

If the purchase price of a pair of shoes is lost in 45 yuan, the neighbor shall be compensated 100 yuan, and 30 yuan shall accept the loss 1 15 yuan.

A pair of shoes is bought in 90 yuan and sold in 60 yuan!

* * * Lost 130 yuan, lost my shoes in 90 yuan, and 40 real coins are gone.

If the purchase price of a pair of shoes is lost in 90 yuan, the neighbor shall be compensated 100 yuan, and 60 yuan shall accept the loss 130 yuan.

The purchase price of a pair of shoes is 90 yuan and 30 yuan!

* * * Lost 160 yuan, lost my shoes in 90 yuan, and 70 real coins are gone.

If the purchase price of a pair of shoes is lost in 90 yuan, the neighbor shall be compensated 100 yuan, and 30 yuan shall accept the loss 160 yuan.