Step-by-step explanation:
Let x teaspoons of salt would be required.
[tex]\therefore \frac{3}{4} : 1 \frac{1}{8} : : 1 : x = \frac{3}{4} : \frac{9}{8} : : 1 : x \\ \\ \therefore \: \frac{ \frac{3}{4} }{ \frac{9}{8} } = \frac{1}{x} \\ \\ \therefore \: \frac{3}{4} \times x = 1 \times \frac{9}{8} \\ \\ \therefore \: x = \frac{9}{8} \times \frac{4}{3} \\ \\ \therefore \: x = \frac{3}{2} \times \frac{1}{1} \\ \\ \therefore \: x = \frac{3}{2} \\ \\ \huge \red{ \boxed{\therefore \: x = 1\frac{1}{2} }}[/tex]
Therefore, [tex] 1\frac{1}{2} [/tex] teaspoons of salt would be required when 1 cup of flour is used.
