Answer :
Data
• Each batch makes 12 pancakes.
,• 3 batches for the brunch.
,• Each batch needs 7/12 cups of milk
,• Total milk: unknown
Procedure
To determine how much milk do we need for 3 batches, we have to add three times the cups needed for one batch as follows:
[tex]\frac{7}{12}+\frac{7}{12}+\frac{7}{12}[/tex]Wich can also be written as a multiplication:
[tex]3\cdot(\frac{7}{12})[/tex]Solving either way:
0. Addition
[tex]\frac{7}{12}+\frac{7}{12}+\frac{7}{12}=\frac{7+7+7}{12}=\frac{21}{12}[/tex]2. Multiplication:
[tex]3\cdot(\frac{7}{12})=\frac{3\cdot7}{12}=\frac{21}{12}[/tex]Finally, we can simplify the resulting fraction as the denominator and numerator are divisible by 3:
[tex]\frac{\frac{21}{3}}{\frac{12}{3}}=\frac{7}{4}[/tex]Answer: 7/4 cups