Mr. Zhang went to the stationery store to buy prizes, and when he did the calculations carefully, the money he brought was just enough to buy 100 exercise books, or just 150 ballpoint pens. Suppose you buy a ballpoint pen and an exercise book as a set of prizes. Then how many sets of prizes can be bought with the money Mr. Zhang brings.
张老师去文具店买奖品，在买时心里仔细一算，所带的钱刚好买100本练习本，或者刚好买150支圆珠笔．假如买一支圆珠笔和一本练习本作为一套奖品．则张老师所带的钱可买多少套奖品．
<gadget id="calculator">1 / 100</gadget>
<output>1/100 = around 0.01</output>

<gadget id="calculator">1 / 150</gadget>
<output>1/150 = around 0.006667</output>

<gadget id="calculator">(1/100) + (1/150)</gadget>
<output>1/60 = around 0.016667</output>

<gadget id="calculator">1 / (1/60)</gadget>
<output>60</output>

<result>60</result>