A lemonade stand sold only small and large cups of lemonade on Tuesday. 2/5 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?  Choose the correct choice from the following answers:
A) (a) 7/16	B) (b) 7/11	C) (c) 10/21	D) (d) 17/35	E) (e) 1/2
A simpler way i guess would be to think that in total 5 cups were sold. Out of which 2 are small and 3 are large. Now let the small ones cost $6. so the large ones would cost $7.   So,   2*6= 
<gadget id="calculator">2*6</gadget>
<output>12</output>
12 and   3*7= 
<gadget id="calculator">  3*7</gadget>
<output>21</output>
21.   Total revenue was 12+21= 
<gadget id="calculator">12+21</gadget>
<output>33</output>
33   and Large cup sales as found above is 21   Therefore answer is 21/33 i.e 7/11   (b) 7/11
<result>B</result>
A lemonade stand sold only small and large cups of lemonade on Tuesday. 2/5 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?