Question

A new 12oz lemon ice drink is advertised for having only 160 calories. How many ounces could Sally drink if she wanted to drink just 100 calories?

Answer 1

$\bf \begin{array}{ccll} ounces&calories\\ \cline{1-2} 12&160\\ x&100 \end{array}\implies \cfrac{12}{x}=\cfrac{160}{100}\implies \cfrac{12\cdot 100}{160}=x\implies 7.5=x$