Question 1203389
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You have already received three responses to your post, showing three different ways to solve the problem.  And although the problem is relatively simple, none of those responses shows a common method for solving a problem in which a ratio like 7:8 is given.<br>
Given that the ratio of tourists to locals is 7:8...<br>
let 7x = number of tourists
let 8x = number of locals<br>
That is a common way to start solving a problem in which a ratio is given.<br>
The number of tourists is 210:
7x = 210
x = 210/7 = 30<br>
The number of locals is 8x = 8(30) = 240<br>
ANSWER: 240 locals<br>