Question 1133139
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I'm sure the other tutor knows how to solve this kind of problem; however, they showed you two alternative methods for solving a DIFFERENT problem.<br>
Of course the correct setup for solving the problem (or rather one possible correct setup) is<br>
{{{x/15 = 12/90}}}<br>
From there, there are many ways to find the solution.<br>
you could "cross multiply" and do the arithmetic; or
you could simplify the fraction on the right (which in this case gives you the exact final answer); or
you could see that 90 is 6 times 15, which means 12 is 6 times x, making it easy to determine the value of x.