A car carries a total of 50 passengers, some of whom buy type A tickets for 1.20 yuan each; the other group buy type B tickets for 1.00 yuan each. The conductor finally counted out. The A-type ticket sold is 16 yuan more than the B-type ticket. How many people bought type A tickets?
一辆汽车共载客50人，其中一部分人买A种票，每张1.20元；另一部分人买B种票，每张1.00元．售票员最后统计出．所卖的A种票比B种票多收入16元．买A种票的有多少人？
<gadget id="calculator">50 + 16</gadget>
<output>66</output>

<gadget id="calculator">1.2 + 1</gadget>
<output>2.2</output>

<gadget id="calculator">66 / 2.2</gadget>
<output>30</output>

<result>30</result>