Tyra has 12 cups of sugar. If r is the amount of sugar called for in one batch of cookies, the expression 12 , +r can be used to find how many batches Tyra can make with the sugar she has. If ris cup, how many batches of cookies can Tyra make? 3 Enter your answer in the box. batches

Respuesta :

19

1) Gathering the data

Tyra -----> 12 2/3 cups of sugar

r (amount of sugar) ------> 1 batch of cookies

12 2/3 ÷ r How many batches

r = 2/3 cups

2) Let's solve this problem by plugging into this expression 12 2/3 ÷ r the value of r

Let's turn this mixed number into an improper fraction, keeping the denominator and multiplying it by the whole number and then add to the numerator.

[tex]12\frac{2}{3}\text{ =}\frac{(3\times12+2)}{3}=\frac{38}{3}[/tex]

Now we can divide it:

[tex]\begin{gathered} \frac{38}{3} \\ \frac{\frac{38}{3}}{\frac{2}{3}}=\frac{38}{3}\times\frac{3}{2}=\frac{38}{2}=19 \end{gathered}[/tex]

3) Hence, the number of batches Tyra can make is 19