12
change the mixed numbers to improper fractions before dividing
1 [tex]\frac{1}{4}[/tex] = [tex]\frac{5}{4}[/tex] and 15 [tex]\frac{1}{3}[/tex] = [tex]\frac{46}{3}[/tex]
divide contents of box by a serving
[tex]\frac{46}{3}[/tex] ÷ [tex]\frac{5}{4}[/tex]
change ÷ to × and turn the second fraction upside down
= [tex]\frac{46}{3}[/tex] × [tex]\frac{4}{5}[/tex]
= [tex]\frac{184}{15}[/tex] = 12.26666 = 12 complete servings
