Cupcakes

In a bowl were some cupcakes. Jane ate one-third, and Dana ate one-quarter of the cupcakes.

a) How many cookies ate together?
b) How many cookies remain in a bowl?

Write the results as a decimal number and notepad as a fraction.

Final Answer:

a =  7/12
b =  5/12

Step-by-step explanation:

$a=\frac{1}{3}+\frac{1}{4}=\frac{4}{12}+\frac{3}{12}=\frac{4+3}{12}=\frac{7}{12}=0.5833$

$b=1-a=1-\frac{7}{12}=\frac{1\cdot 12}{12}-\frac{7}{12}=\frac{12}{12}-\frac{7}{12}=\frac{12-7}{12}=\frac{5}{12}=0.4167$

Try another example