The answer should be nine. The reason why is this: every three out of ten students will have a subscription. This can be shown by the fraction 3/10. If there are thirty students then the denominator would equal 30 because it represents the total amount of students being considered. Therefore if you want to get to 30 you find out what the number 10 (original denominator) will need to be multiplied by to reach the wanted denominator (30). To finish this divide 30 by 10 and then get three. Multiply both the numerator and denominator by the factor three to reach the wanted denominator and subsequent numerator to create an equivalent fraction. The numerator in the equivalent fraction is nine. This means about nine kids should have a magazine subscription.
