Shana wanted to make a birthday cake for her mother. Her old-fashioned recipe calls for three-twelfths of a teaspoon of salt, but her measuring spoons only measure in fourths. How many fourths of a teaspoon should she use?
A. one-fourth
B. two-fourths
C. three-fourths
D. Start Fraction 4 over 4 End Fraction
3/12 = x/4
12 x = 12
x = 1
so one fourth
Note 3/12 = 1/4
To convert three-twelfths to a fraction that can be measured with Shana's fourth measuring spoon, we need to find an equivalent fraction with the same value as three-twelfths but with a denominator of four.
Since 12 can be divided evenly by 4, we can multiply both the numerator and denominator of three-twelfths by 4 to get an equivalent fraction:
3/12 * 4/4 = 12/48
Therefore, Shana should use twelve forty-eighths of a teaspoon, which can be simplified to three-fourths (12/48 = 3/12 = 1/4).
So, the answer is C. three-fourths.
To solve this problem, we need to convert three-twelfths into a fraction that uses fourths instead.
Since there are four fourths in one whole, we can convert the denominator of the fraction from twelfths to fourths by multiplying both the numerator and the denominator by 4.
So, three-twelfths can be written as (3 * 4) / (12 * 4) which equals twelve-fourths.
Therefore, Shana should use twelve-fourths of a teaspoon of salt.
Since twelve-fourths is equivalent to three, the answer would be C. three-fourths.