Question

Fill in the following boxes:

$\frac{3}{10}=\frac{12}{\square }=\frac{\square }{50}=\frac{\square }{60}$

• A. $40$
• B. $15$, $18$

Answer 1

Step 1: In order to find the value of first blank, write $\frac{3}{10}=\frac{12}{\square }$ that can be rewritten as $3\times \square =12\times 10$ then solve for $\square$.

$3\times \square =120$

Step 2: Divide both sides by $3$ and solve for $\square$.

$\frac{3}{3}\times \square =\frac{120}{3}$

$\square =40$

Step 3: In order to find the value of second blank, write $\frac{3}{10}=\frac{\square }{50}$ that can be rewritten as $3\times 50=10\times \square$ then solve for $\square$.

$150=10\times \square$

Step 4: Divide both sides by $10$ and solve for $\square$.

$\frac{150}{10}=\frac{10}{10}\times \square$

$15=\square$

Step 5: In order to find the value of third blank, write $\frac{3}{10}=\frac{\square }{60}$ that can be rewritten as $3\times 60=10\times \square$ then solve for $\square$.

$180=10\times \square$

Step 6: Divide both sides by $10$ and solve for $\square$.

$\frac{180}{10}=\frac{10}{10}\times \square$

$18=\square$