Zhang Xin and Li Ming have an appointment to go to the book mall to buy books.

hello

If the original price of the book is ***x yuan, the price will become 0.8x yuan after the card is issued, and the card fee in 20 yuan is excessive, and the actual cost is 0.8x+20.

So x-(0.8x+20)= 12.

0.2x=32

x= 160

So the original price of the last book is 160 yuan.