Question 1068930

a sunday school class has 21 students. As the teacher took roll, he noticed that the boys out numbered the girls by a four to three ratio. How many boys were present?
<pre>Number of boys: {{{highlight_green(matrix(1,5, (4/(4 + 3)) * 21, "=", (4/7) * 21, "=", 12))}}}
That's all.......nothing COMPLEX and/or CONFUSING!