Xiaolin's family has x white rabbits, and the number of black rabbits is 1.5 times that of white rabbits. How many white rabbits and black rabbits are there altogether?
小林家有白兔x只，黑兔的只数是白兔的1.5倍，白兔和黑兔一共有多少只．
<gadget id="calculator">1 + 1.5</gadget>
<output>2.5</output>

<result>2.5</result>