and B together buy exercise books with the same amount of money. After buying, A took 10 more books than B, so A needs to give B 5 yuan, so how much is the unit price of the exercise book? (Draw a line diagram first, then answer)
甲乙两人哪同样多的钱合买练习本．买了以后，甲比乙多拿了10本，因此甲需要给乙5元钱，那么练习本单价是多少元/本？(先画线段图，再解答)
<gadget id="calculator">2 / 10</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">5 * (1/5)</gadget>
<output>1</output>

<result>1</result>