Mom bought 2 kilograms of bananas and 3 kilograms of apples, and the total cost was 11.4 yuan, 2.8 yuan per kilogram of apples, how much is it per kilogram of bananas?
妈妈买了2千克香蕉和3千克苹果，共花去11.4元，每千克苹果2.8元，每千克香蕉多少元？
<gadget id="calculator">2.8 * 3</gadget>
<output>8.4</output>

<gadget id="calculator">11.4 - 8.4</gadget>
<output>3</output>

<gadget id="calculator">3 / 2</gadget>
<output>3/2 = around 1.5</output>

<result>3/2 = around 1.5</result>