Randomly check 50 cases of a certain brand of canned food, and find that 3 cases are unqualified. What is the pass rate of this brand of canned food?
抽查某种品牌罐头50箱，发现有3箱不合格，这种品牌罐头的合格率是多少．
<gadget id="calculator">50 - 3</gadget>
<output>47</output>

<gadget id="calculator">47 / 50</gadget>
<output>47/50 = around 0.94</output>

<gadget id="calculator">100 / 100</gadget>
<output>1</output>

<gadget id="calculator">(47/50) * 1</gadget>
<output>47/50 = around 0.94</output>

<result>47/50 = around 0.94</result>