<PRE><B>Question 251812</B>
by increasing the cost of entry ticket to a fair in the ratio 10:13, 
the number of visitors to the fair has decreased in the ratio 6:5
 in what ratio has the total collection increased or decreased;
:
Let original Tickets cost $10 and and number of visitors is 600
Original revenue: 10 * 600 = $6000
then
Tickets cost $13 and number of visitors is 500
New Revenue: 13 * 500 = $6500
:
Increase of total collection ratio: {{{6500/6000}}} reduces to: 13:12 </PRE>