Question

A cup of cake batter is made using 1/4 cup of sugar, 2/5 cup of flour, and milk. What percentage of the batter is milk?

Answer 1

Answer:

1/4 + 2/5

LCM = 20

5/20 + 8/20 = 13/20

Milk used = 20/20 - 13/20 = 7/20

Answer 2

Answer:

$solution \: = \frac{1}{4} + \frac{2}{5} \\ = lcm \: of \: 4 \: and \: 5 = 20 \\ = percent \: of \: sugar + flour \: in \: the \: batter \: = \frac{13}{20} \\ = to \: find \: milk = 20 - 13 = 7 \\ = \frac{7}{20} = 100 \times \frac{7}{20} \\ = 700 \div 20 = 35 \\ \\ = answer = 35\%$

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