Question 1175686
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Note to the student:<br>
Tutor @Math Therapy started on the problem by letting the numbers of boys and girls be 3x and 4x.<br>
The other tutor started on the problem by saying that the number of boys is 3/4 the number of girls.<br>
Compare the amount of work involved in solving the problem by the two methods; the first method requires FAR less work.<br>
You should learn from this that VIRTUALLY ALWAYS (if not always) the best way to start work on a problem when given a ratio like 5:7 is to let the two numbers be 5x and 7x.<br>