A lemonade stand sold only small and large cups of lemonade on Tuesday. 4/5 of the cups sold were small and the rest were large. If the large cups were sold for 7/6 as much as the small cups, what fraction of Tuesday's total revenue was from the sale of large cups?	Pick one
A) 7/31
B) 7/15
C) 10/21
D) 17/35
E) 1/2
Let the total # of cups be 10.   # of small cups sold 4/5*10= 
<gadget id="calculator">4/5*10</gadget>
<output>8</output>
8;   # of large cups sold  10-8= 
<gadget id="calculator"> 10-8</gadget>
<output>2</output>
2;   Let the price of small cup be $6, then the price of larges cup would be 7/6*6= 
<gadget id="calculator">7/6*6</gadget>
<output>7</output>
$7;   Revenue from small cups:8*$6=$48   Revenue from large cups cups: 2*$7 8* 6= 
<gadget id="calculator"> 8* 6</gadget>
<output>48</output>
$48   Revenue from large cups cups: 2*$7=$14;   Fraction of total revenue from large cups: 14/(14+48)2* 7= 
<gadget id="calculator">2* 7</gadget>
<output>14</output>
$14;   Fraction of total revenue from large cups: 14/(14+48)=7/31.   7/31nswer: 7/31.
<result>A</result>
A lemonade stand sold only small and large cups of lemonade on Tuesday. 4/5 of the cups sold were small and the rest were large. If the large cups were sold for 7/6 as much as the small cups, what fraction of Tuesday's total revenue was from the sale of large cups?