There are 45 male passengers on the bus. If the number of female passengers is reduced by 10%, which is exactly equal to (3/5) the number of male passengers, how many female passengers are there on the bus?
汽车上有男乘客45人，若女乘客人数减少10%，恰好与男乘客人数的(3/5)相等，汽车上女乘客有多少人．
<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">45 * (3/5)</gadget>
<output>27</output>

<gadget id="calculator">10 / 100</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">1 - (1/10)</gadget>
<output>9/10 = around 0.9</output>

<gadget id="calculator">27 / (9/10)</gadget>
<output>30</output>

<result>30</result>