Question

Fill in the blank with the choices below, and tell me what does x = to

Answer 1

The information given is;

$\begin{gathered} 2\text{pennies}=5\text{grams} \\ 12\text{pennies}=\text{?} \end{gathered}$

To set up a proportion we shall take the weight of 12 pennies (unknown) to be represented by x. Therefore, we would have;

$\frac{2\text{pennies}}{5\text{grams}}=\frac{12\text{pennies}}{x\text{ grams}}$

In order words we would have;

$\frac{2}{5}=\frac{12}{x}$

Cross multiply and you'll have;

$\begin{gathered} x=\frac{12\times5}{2} \\ x=\frac{60}{2} \\ x=30 \end{gathered}$

ANSWER:

x = 30 grams