The sign at an amusement park reads, "You must be 48 inches tall to go on this ride." To be admitted to this ride, how many feet tall must a person be? (Enter numeric value only.)

The ratio 240:X=80:0.8 to proportion equation becomes

\(\frac{240}{X}=\frac{80}{0.8}\)

Find value of X by cross-products

\(240\ast0.8=80X\)

\(192=80X\)

Divide both sides by 80

\(\frac{192}{80}=\frac{80X}{80}\)

\(2.4=X\)

Thus, X=2.4

First convert 8 ¼ to improper fraction as

\(8\frac{1}{4}=\frac{\left(8\ast4\right)+1}{4}=\frac{32+1}{4}=\frac{33}{4}\)

Use 1 pint =16 ounces to convert between pints and ounces

\(\frac{33}{4}\ pints\ast\frac{16 ounces}{1 pint}=132 ounces\)

Find the least common divisor of 10 and 5, which is 10 and use it to carry out subtraction of fractions as follows

\(\frac{9}{10}-\frac{2}{5}=\frac{9\left(1\right)-2\left(2\right)}{10}=\frac{9-4}{10}=\frac{5}{10}=\frac{1}{2}\)

Divide the numerator by 5 as follows

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