The ratio of the number of girls to the number of boys in the sixth grade of a central elementary school is 3:5. It is known that there are 100 more boys than girls. How many boys are there?
某中心小学六年级女生人数和男生人数的比是3：5，已知男生比女生多100人，男生有多少人？
<gadget id="calculator">5 - 3</gadget>
<output>2</output>

<gadget id="calculator">100 / 2</gadget>
<output>50</output>

<gadget id="calculator">50 * 5</gadget>
<output>250</output>

<result>250</result>