Question 657439
  <pre><font face = "Tohoma" size = 3 color = "indigo"><b> 
Hi,
42 children, 2/3 of the children were boys &#8658;  28 boys and  14 girls
Each boy received the same number of stickers{{{highlight(x)}}}, girls {{{highlight(2x)}}}
Question states***840 stickers
  28x + 14·2x = 840
     56x = 840
       x = 15, number of tickets each boy had.  Each girl had 30 tickets.
and...
 {{{28*15 + 14*30 = 840}}}