The school bought 20 basketballs and 60 medicine balls for a total of 1078 yuan. Given that the unit price of a basketball is 15.5 yuan, what is the unit price of a solid ball? (Solution of column equation)
学校买了20个篮球和60个实心球，共花了1078元．已知篮球的单价为15.5元，实心球的单价是多少元？(列方程解)
<gadget id="calculator">20 * 15.5</gadget>
<output>310</output>

<gadget id="calculator">1_078 - 310</gadget>
<output>768</output>

<gadget id="calculator">768 / 60</gadget>
<output>64/5 = around 12.8</output>

<result>64/5 = around 12.8</result>