There are some notebooks, which are divided into Class 1 and Class 2 of the sixth grade according to the number of students. It is known that there are 40 students in Class 1 and 30 students in Class 2. It is known that 160 books are assigned to Class 1. How many copies should be assigned to Class 2 ?
现有一些笔记本，按人数分给六年级的一班和二班，已知一班有40名学生，二班有30名学生，已知一班分到160本，二班应分到多少本？
<gadget id="calculator">40 / 30</gadget>
<output>4/3 = around 1.333333</output>

<gadget id="calculator">1 / (4/3)</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">160 * (3/4)</gadget>
<output>120</output>

<result>120</result>