Question 1201382
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A general comment on this kind of problem -- as demonstrated by the two responses you have received to now.<br>
Given a ratio of 4:7, you can let the two numbers be x and y and then solve the problem using two variables and a bunch of operations involving ugly fractions, as one tutor did.<br>
Or you can take the given ratio of 4:7 and let the two numbers be 4x and 7x -- leading to a solution using one variable and very simple operations.<br>
The lesson:<br>
Given a ratio A:B at the beginning of a problem, let the two numbers be Ax and Bx.  Virtually always (if not always) that will make solving the problem much easier.<br>