The school bought 5 basketballs and 5 volleyballs each. The basketball cost 235 yuan and the volleyball cost 115 yuan. How much is a basketball more expensive than a volleyball?
学校买了蓝球、排球各5个，买篮球用去235元，买排球用去115元，一个篮球比一个排球贵多少元．
<gadget id="calculator">235 - 115</gadget>
<output>120</output>

<gadget id="calculator">120 / 5</gadget>
<output>24</output>

<result>24</result>