A and B spend the same amount of money to buy exercise books together. After buying, A took 10 more copies than B, so A needs to give B 5 yuan. So how much is each exercise book?
甲、乙两人拿同样多的钱合买练习本．买了以后，甲比乙多拿了10本，因此甲需给乙5元钱．那么每本练习本是多少元？
<gadget id="calculator">10 / 2</gadget>
<output>5</output>

<gadget id="calculator">5 / 5</gadget>
<output>1</output>

<result>1</result>