Question

let $y$ be the number of years it will take the stalactite to grow 5 inches.
write a multiplication equation to describe the situation.
$\frac{1}{200}y = 5$
how long will it take the stalactite to grow 5 inches?
it will take the stalactite $\square$ years to grow 5 inches.
$\frac{1}{200}y = 5$
$200\left(\frac{1}{200}\
ight)y = 200(5)$

Explanation:

Step1: Isolate y by multiplying both sides by 200

$$200 \times \frac{1}{200}y = 200 \times 5$$

Step2: Simplify both sides of the equation

$$y = 1000$$

Answer:

It will take the stalactite 1000 years to grow 5 inches.