During the Chinese New Year, my mother gave my elder sister and younger brother the same amount of New Year's money. The elder sister spent 290 yuan, and the younger brother spent 270 yuan. At this time, the younger brother's money was three times that of the older sister's. How much lucky money did the older sister and younger brother get each?
过年了，妈妈给姐姐和弟弟同样多的压岁钱．姐姐花了290元，弟弟花了270元，这时弟弟的钱数是姐姐的3倍．姐姐和弟弟各得到多少压岁钱？
<gadget id="calculator">290 - 270</gadget>
<output>20</output>

<gadget id="calculator">3 - 1</gadget>
<output>2</output>

<gadget id="calculator">20 / 2</gadget>
<output>10</output>

<gadget id="calculator">290 + 10</gadget>
<output>300</output>

<result>300</result>