A and B share a certain amount of RMB. If B gives A 30 yuan, the remaining money of B is 25% of A's existing money, and A's original money accounts for 60% of the total. How much RMB does B have?
甲乙两人共有人民币若干元，若乙给甲30元，则乙余下的钱是甲现有钱的25%，甲原有钱占总数的60%，乙原有人民币多少元？
<gadget id="calculator">4 / 1</gadget>
<output>4</output>

<gadget id="calculator">1 + 4</gadget>
<output>5</output>

<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">60 / 100</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">(4/5) - (3/5)</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">30 / (1/5)</gadget>
<output>150</output>

<gadget id="calculator">1 - (3/5)</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">150 * (2/5)</gadget>
<output>60</output>

<result>60</result>