Question 1203389
<pre>
If the ratio of tourists to locals is 7:8 and there are 210 tourists at the opening of a new museum, how many locals are in attendance?

Let number of locals in attendance be L
Then we get: {{{matrix(1,3, 
ANTECEDENT/CONSEQUENT, "=", matrix(1,5, Actual, number, represented, by, ANTEDECENT)/matrix(1,5, Actual, number, represented, by, CONSEQUENT))}}}

                       {{{matrix(1,3, 7/8, "=", 210/L)}}}
                       7L = 8(210) ----- Cross-multiplying
Number of locals in attendance, or {{{highlight_green(matrix(1,7, L, "=", 8(210)/7, "=", 8(30), "=", highlight(240)))}}}</pre>